Download - gemcom introduction
-
8/18/2019 gemcom introduction
1/61
Page 2563
Exploration Chapter 19: Creating Plane Plots
Chapter 19
Creating Plane Plots
In this Chapter
•Introduction
• Types of Plane Plots
• Legends
• General Procedures
• Selecting a Plane
• Preparing Topographic Surface Intersections
• Viewing Prepared Data
Introduction
Much of your work with Gemcom for Windows involves projecting data onto planes or combining it with topographic data on surfaces.
These two-dimensional representations of three-dimensional data
are commonly created from detailed exploration drilling or
mapping data.
You can create plane plots in Gemcom for Windows from four
different types of planes: These are the following:
• Surfaces. Surfaces are horizontal planes that have neither a
specified elevation nor upper or lower elevation limits. As there
is only one surface possibility, you do not need to enter any
parameters to define it.
The coordinate system used for data on surfaces is the worldcoordinate system used throughout the project.
-
8/18/2019 gemcom introduction
2/61
Page 2564
Section V: Plane Plots Gemcom for Windows
• Plan Views (Horizontal Sections). Plan views are horizontal
planes with specified elevations.
• Vertical Sections. Vertical sections are planes with specific
locations that are vertically oriented.
• Inclined Sections. Inclined sections are planes that have
horizontal top and bottom edges and are inclined in a specified
direction at a specified angle.
For detailed information on sections and how to define them, seeChapter 6: General Data Definitions, Volume I: Core.
Plane Plots on Surfaces
You can produce plane plots that will be used as surfaces. A singlemap is produced from all of the records selected in the database.
You can define the name of the plot files that you create. A suffix
(.GGP) is automatically added to the name that you define. The plot
file is located in the \GCDBnn\TOPOSRFC subdirectory.
Plane Plots on Plan Views
You can produce plane plots on sets of plan views. A single map is
produced for each plan view selected. Multiple plan views can be
produced in a single operation using the same profile.
You can define the name of the plot files that you create. A singlename is used for all of the plot files in the set that you are creating;
each plot file is located in the appropriate sub-directory (the
\GCDBnn\PLANVIEW\ planview_name sub-directory) for the plan
view. A suffix (.GGP) is automatically added to the name that you
define.
Planview_name is the name you gave to the plan view when youdefined its location.
-
8/18/2019 gemcom introduction
3/61
Page 2565
Exploration Chapter 19: Creating Plane Plots
Plane Plots on Vertical Sections
You can produce plane plots on sets of vertical sections. A singleplot is produced for each section selected. Multiple sections can be
produced in a single operation using the same profile.
You can define the name of the plot files that you create. A single
name is used for all of the plot files in the set that you are creating;
each plot file is located in the appropriate sub-directory (the
\GCDBnn\ V _SECT\ section_name sub-directory) for the section. A suffix (.GGP) is automatically added to the name that you define.
Section_name is the name you gave to the section when you defined
its location.
Plane Plots on Inclined Sections
You can produce plane plots on sets of inclined sections. A single
plot is produced for each section selected. Multiple sections can be
produced in a single operation using the same profile.
You can define the name of the plot files that you create. A single
name is used for all of the plot files in the set that you are creating;each plot file is located in the appropriate sub-directory (the
\GCDBnn\I_SECT\ section_name sub-directory) for the section. A
suffix (.GGP) is automatically added to the name that you define.
Section_name is the name you gave to the section when you defined
its location.
Types of Plane Plots
You can use the exploration tools in Gemcom for Windows to create
the following types of plane plots:
• Symbol Plots
• Drillhole Plots
-
8/18/2019 gemcom introduction
4/61
Page 2566
Section V: Plane Plots Gemcom for Windows
• Polygon Plots
• Structure Maps
•Grid Cell and Contour Plots• Topographic Surface Intersections
Symbol Plots
Symbol plots are used to display data from any table containing a
coordinate field. Each data point is displayed with a symbol, along with optional annotative data from up to six other fields from the
table.
Symbol plots can be created for surfaces, plan views, vertical
sections and inclined sections.
Before you can create a symbol plot, you must have defined at leastone symbol plot profile.
For more details on creating symbol plots and symbol plot profiles,
see Chapter 20: Symbol Plots and Sections.
Drillhole Plots
Drillhole plots display data from drillhole or traverse workspaces
on surfaces, plan views, vertical sections or inclined sections.
Drillholes and traverses are displayed as trace lines projected onto
the plane, and data from any of the workspace tables can be
displayed at the collar or along the trace of each drillhole or
traverse.
Before you can create a drillhole plot, you must have defined at
least one drillhole plot profile. In addition, if you are creating
drillhole plots on vertical or inclined sections, you can define a grid
profile for the drillhole plot.
For more information on creating drillhole plots and associatedprofiles, see Chapter 21: Drillhole Plots and Sections.
-
8/18/2019 gemcom introduction
5/61
Page 2567
Exploration Chapter 19: Creating Plane Plots
Polygon Plots
Polygon plots display data from polygon workspaces on surfaces,plan views, vertical sections or inclined sections. Polygons are
displayed with line segments connecting each of the points that
define the polygon. Data from any of the workspace tables can be
displayed either at the approximate centre or next to each point of
the polygon.
Before you can create a polygon plot, you must have defined at leastone polygon plot profile.
For more information on creating polygon plots and polygon plot
profiles, see Chapter 22: Polygon Plots and Sections.
Structure Maps
Structure maps display data from any type of workspace which
contains a coordinate field in at least one table. Each data point is
displayed with a special symbol that describes the particular
geological structure located at that point (for example, bedding,
foliation, faults, etc.).
Structure maps can only be displayed on surfaces or plan views.
Before you can create a structure map, you must have defined a
structure code table and a structure mapping profile.
For more information on creating structure maps, code tables and
profiles, see Chapter 23: Structure Maps.
Grid Cell and Contour Plots
You can produce contour maps from regular grids of data that have
been created from data randomly distributed in space. These grids
can be oriented in any location on surfaces, plan views, vertical
sections and inclined sections.
-
8/18/2019 gemcom introduction
6/61
Page 2568
Section V: Plane Plots Gemcom for Windows
Before you can create a contour plot, you must have defined a grid
cell display profile and a grid contour profile.
For more information on creating grid cell contour plots and
associated profiles, see Chapter 24: Gridding and Contouring.
Topographic Surface Intersections
You can interpolate the intersection of the surface topography withone or more vertical sections. The resulting intersection lines can
be displayed on these sections along with other data such as points
or drillhole traces.
For more information on creating topographic surface intersections,
see page 2571.
Legends
You can add a legend to most types of plane plots. The information
in the legend comes from the plot display profile that you specify.
Legends are created as part of the plane plot creation process in
separate files from the plots to which they refer, and are saved in
the appropriate plane subdirectory (i.e., V _SECT, I_SECT, PLANVIEW,
or TOPOSRFC) of the current project. This allows you to bring the
legend file into QuickPlot later separately, either beside your data
or into an individual viewport.
General Procedures
In order to create a plane plot, follow this general procedure:
1. If you are creating a plane plot using a plan view or vertical or
inclined section, ensure that the appropriate section(s) have
been defined (see Chapter 11: The View Menu, Volume I: Core).
-
8/18/2019 gemcom introduction
7/61
Page 2569
Exploration Chapter 19: Creating Plane Plots
2. Select the plane type (plan view, vertical, inclined, or surface)
and, if applicable, the desired section(s) according to the names
given when the sections were defined originally. For more
information, see the next section in this chapter.
Figure 19-1: A legend for a plot
-
8/18/2019 gemcom introduction
8/61
Page 2570
Section V: Plane Plots Gemcom for Windows
3. Define the necessary profiles for the type of plane plot you wish
to create. Most types of plane plot profiles can be used for all
plane types and thus could be defined before you select the
plane type (step 2). However, some profiles are applicable only
for one or two plane types and will not be dimmed on the menu
until you select the appropriate plane type.
For more information on the profiles necessary for a particular
type of plane plot, see the appropriate chapter in this volume.
4. Prepare the desired plane plot. This will include preparing thelegend file, if applicable to the type of plot you are creating. For
more information, see the appropriate chapter in this volume.
5. Plot out the prepared data for viewing on-screen. For more
information, see “Viewing Prepared Data” on page 2573.
Selecting a Plane
Before you can create any type of plane plot, you must choose the
type of plane for which you want to create the plane plot. In
addition, for plan views, vertical sections and inclined sections, you
must also specify one or more previously defined planes.
For information on defining sections or plan views, see Chapter 11:
The View Menu, Volume I: Core.
To select a plane or planes, follow these steps:
1. Choose Tools}} Create Plane Plots
}} Select GGP Planes.
2. In the dialog box that appears, select one of the following four
types of plane:
• Vertical. This option allows you to choose from among the
previously-defined vertical sections. You can select as many
as you want.
-
8/18/2019 gemcom introduction
9/61
Page 2571
Exploration Chapter 19: Creating Plane Plots
• Inclined. This option allows you to choose from among the
previously defined inclined sections. You can select as many
as you want.
• Plan View. This option allows you to choose from among
the previously defined plan views. You can select as many
as you want.
• None (Surface). Select this option to work with a surface.
3. If you selected Vertical, Inclined or Plan View, you will see adialog box listing the available sections of the type you chose.
Select the desired section(s) from the list and click OK.
You can now proceed to prepare your plane plot.
Preparing Topographic Surface Intersections
You can interpolate the intersection of the surface topography with
each vertical section defined in the active workspace. Then you can
display the intersection line on each section along with other data
such as points or drillhole traces.
Gemcom for Windows uses the STATUSLN.DAT status map file to plot
the surface topography for this operation. This file is created under the
Data submenu on the Polyline menu (Save All Polylines to Status
Map and Save Active Polylines to Status Map) and is located in
the Status Map path as defined in the Gemcom Project Path Editor
( Assign Project Paths on the File menu). For any projects originally
created in pc-xplor, that path will probably be pxdbaa\toposrfc. Formore information on status maps, see Chapter 8: Polylines and
Chapter 13: The Polyline Menu, Volume I: Core.
Gemcom for Windows uses a geometric interpolation technique to
calculate the intersection of each section with the topography as
defined in the status map. First, the section line is laid over the
topography. Then the coordinates are determined by the intersection of the section line and each contour line. These coordinates are sorted
-
8/18/2019 gemcom introduction
10/61
Page 2572
Section V: Plane Plots Gemcom for Windows
into order from left to right along the section line and transformed to
the internal coordinate system of the section for display.
Follow this procedure to prepare a topographic surface intersection
with a vertical section:
1. Choose Tools }} Create Plane Plots }} Select GGP Planes.
2. In the Select Section Type dialog box that appears, choose
Vertical and click OK.
3. Select the vertical section(s) you wish to use to create the
topographic/surface intersection plot and click OK.
4. From the Create Plane Plots submenu of the Tools menu,
choose Prepare Topographic Surface Intersections.
Figure 19-2: Interpolation of surface topography onto a section
-
8/18/2019 gemcom introduction
11/61
Page 2573
Exploration Chapter 19: Creating Plane Plots
5. Gemcom for Windows will display a window showing the
progress of the plotting process. Click OK to clear the window
from the screen when the process is complete.
This function creates a GGP file named TOPOSRFC.GGP which is
stored in the subdirectory of the section used to intersect the
surface topography (status map). If you selected more than one
section in step 2 above, each section subdirectory will contain its
own TOPOSRFC.GGP file. These files can be viewed in the same way
as any of the GGP plane plot files (see the next section).
Viewing Prepared Data
Once you have created your plane plots as outlined in Chapters 19
through 24, you will want to view your new plots. This procedure
creates a PRIMFILE.DAT file, which contains a list of the GGP files you
can view on-screen in 2D mode or bring into QuickPlot for printing.
GGP files are 2D graphics files in a Gemcom-specific format. Your
PRIMFILE.DAT file can list as many plane plot GGP files as you like,
as long as they are all for the same plane type.
If you want to view plotted data for plan views or vertical or inclined
sections, you can view multiple plane plots in two different ways:
• Simultaneously. You can choose to view all selected plane
plots (for one plane or more than one plane) on-screen
simultaneously.
• Sequentially. You can choose to view one or more series of plane
plots one section at a time, by cycling through the availablesections. (Note that if you choose this method, you will not be able
to bring the files directly into QuickPlot, as it will not recognize the
path structure in the PRIMFILE.DAT file. To print out a series of
plane plots, you would want to create QuickPlot batch plots.)
Follow this procedure to view your plotted data on-screen:
-
8/18/2019 gemcom introduction
12/61
Page 2574
Section V: Plane Plots Gemcom for Windows
1. Ensure that Gemcom for Windows is in 2D mode, and that you
have selected a plane for which you want to view or print a plot.
2. Choose Tools }} Create Plane Plots }} Update PRIMFILE.DAT with
Prepared Data. Alternatively, you can select Options }}
Create/Modify PRIMFILE.DAT. The Create PRIMFILE.DAT dialog box will appear.
3. In the box entitled Source of GGP Files, select the type of GGP
file you wish to view from among the following five options:
• Vertical Sections
• Inclined Sections• Plan Views
• Surface
• Other
4. If you selected Vertical Sections, Inclined Sections or Plan
Views, the dialog box will appear as it does in Figure 19-3. Do
one of the two following things:
Figure 19-3: Create PRIMFILE. DAT dialog box
-
8/18/2019 gemcom introduction
13/61
Page 2575
Exploration Chapter 19: Creating Plane Plots
• From the Select One or More Sections list, select the
plane(s) for which you wish to see plotted data. You would
use this method if you wanted to see plots from one or more
planes simultaneously.
or
• Click the Use Active Section checkmark to display plotted
data available for the active plane as defined under the View
Menu (see Chapter 11: The View Menu, Volume I: Core). The
Select One or More Sections list will disappear. In the ggpfile paths listed in the Select One or More ggp Files list, the
name of the plane sub-directory will be replaced by %1, and all
ggp file names will be displayed regardless of the particular
plane(s) to which they apply. This allows you to display
sequentially sets of plane plots created from the same plotting
profile for a series of planes.
If you selected Surfaces, choose the surface(s) you wish to view
from the Select One or More GGP Files box.
If you selected Other, a box entitled Search for GGP Files in
will appear. Enter the path that contains the GGP file you wish
to plot in that box.
5. Choose the GGP file(s) that you wish to display from the Select
One or More GGP Files list. You can choose as many GGP files
from the list as you want.
6. If you wish to view these files in addition to any GGP files that
are already in the current PRIMFILE.DAT file, click the Append to
Existing PRIMFILE.DAT file checkbox. To overwrite the currentPRIMFILE.DAT file, leave the checkbox unselected.
7. Click OK to save your settings and close the dialog box.
8. Ensure that the Options }} Display PRIMFILE.DAT GGP Files
command has been selected. If there is a checkmark adjacent to
this command in the menu, then it is active. If the command is
not active, selecting it will activate it. (Selecting it again will
deactivate it.)
-
8/18/2019 gemcom introduction
14/61
Page 2576
Section V: Plane Plots Gemcom for Windows
9. Select Options }} Zoom to GGP Extents to size the window so that
all data from all GGP files in the PRIMFILE.DAT file is visible.
If you clicked on Use Active Section in step 4 and your plots do notappear on-screen immediately, your active plane may not contain the
particular GGP file(s) that you selected. Click the Select Next Plane and
Select Previous Plane buttons (or select these commands from the View
Menu) to cycle through the available planes until you see your data.
These commands also allow you to view a set of plane plots in order.
Printing Plane Plots
If you did not use the Select Active Section option (or if it was not
available) when you created your PRIMFILE.DAT file, you can bring it
directly into QuickPlot for viewing and printing. Follow this
general procedure:
1. Activate QuickPlot as outlined in Chapter 19: Graphics Output,
Volume I: Core.
2. From the QuickPlot File menu, select Open Pre-Selected GGP File.
This will open the GGP files listed in PRIMFILE.DAT.
3. From the QuickPlot Window menu, select Zoom to Data Extents
to ensure that your entire plot is visible.
You can now use QuickPlot to open your legend file (if applicable),
format your plots for printing, and print them out using a printer
or plotter. See the QuickPlot online help for detailed information.
If you did choose the Select Active Section feature, you will notbe able to bring PRIMFILE.DAT directly into QuickPlot, as it will not
recognize the modified path structure used to create the
PRIMFILE.DAT file. In this case, you will have to create a QuickPlot
batch plot. For detailed information on creating batch plots, see
Chapter 19: Graphics Output, Volume I: Core.
-
8/18/2019 gemcom introduction
15/61
Page 2577
Exploration Chapter 20: Symbol Plane Plots
Chapter 20
Symbol Plane Plots
In this Chapter
• Introduction
• Symbol Plot Profiles
• Preparing Symbol Plots
Introduction
You can display data from any table containing a coordinate field.
Each data point is displayed with a symbol, along with annotative
data from up to six fields from the header table or table containing
the coordinate field (if different from the header table). This type of
display is called a symbol plot.
Symbols can be displayed on surfaces, plan views, vertical sections
and inclined sections. Data is projected orthogonally onto each of
these plane types from within the thicknesses of the planes.
Data for symbol plots can come directly from the database or an
extraction file. If you are using data from the database, you can applyfilters to the data to define selection criteria to plot a subset of data.
Symbols on Surfaces
If you are plotting a symbol map onto a surface, the workspace
coordinate field does not require an elevation value. If the elevationvalue is present, no check is made on this value. No coordinate
-
8/18/2019 gemcom introduction
16/61
Page 2578
Section V: Plane Plots Gemcom for Windows
transformation is performed on the point locations: the coordinates
of the points in the graphics file are the same as the coordinates of
the points in the workspace.
Symbols on Plan Views
If you are plotting a symbol map onto a plan view, the coordinate
field in the workspace must have an elevation value. This elevation
value is checked against the lower elevation limit and the upperelevation limit of each plan view selected. A point is only accepted
for a plan view symbol plot if the elevation of the point is greater
than the lower elevation limit and less than or equal to the upper
elevation limit. No coordinate transformation is performed on the
point location: the coordinates in the graphics file are the same as
the coordinates of the points in the workspace.
Symbols on Vertical and Inclined Sections
If you are creating a symbol plot for a vertical or inclined section, the
coordinate field in the workspace must have an elevation value. The
coordinate of each point is transformed to the section coordinate
system, and the local Z coordinate is checked against the towards and
away distances defined for the section. A point is only accepted for a
section if the local Z coordinate of the point falls between these limits.
The coordinates of the graphics file are the local inclined section
coordinates. For more information on vertical section coordinates, see
Chapter 6: General Data Definitions, Volume I: Core. No adjustment
can be made for plunge or dip angles.
Symbol Plot Features
You can control the following features of the symbol plot:
• Symbol type• Symbol size
-
8/18/2019 gemcom introduction
17/61
Page 2579
Exploration Chapter 20: Symbol Plane Plots
• Symbol colour
• Fields to be used
• Text size
• Text colour
• The text position
• The text angle
All of the symbol and text attributes that you define for a symbol
plot are stored in a symbol plot profile. Each profile is given a
name, and you can define as many profiles as you want. When you
want to prepare symbol plots, you can select the profile that youwant to use from a list or by entering its name.
Symbol Plot Profiles
Before you can prepare symbol plots from workspaces or extractionfiles, you will have to define a symbol plot profile in which you can
specify which symbol or text attributes will be used within given
ranges of data or for specific fields.
To create a new symbol plot profile, follow this procedure:
1. Select Tools }} Create Plane Plots }} Define Symbol Plot Profiles. TheSymbol Plot Profile Editor dialog box will appear.
2. Choose Add and type a name for your symbol plot profile. Choose
OK.
3. Decide whether you want your symbol plot profile to be based
on an extraction file or on a complete workspace. At the top of the profile editor dialog box, you will see Symbol Profile based
on data from followed by a button called either Extract File or
Workspace. Clickingthis button allows you to toggle between
these two options. Note that once you have saved a profile, this
option is no longer available (i.e., the button is dimmed).
There are three parameter entry areas in the symbol profileeditor: Symbol Data, Symbol Definition, and Text Definition.
P 2580
-
8/18/2019 gemcom introduction
18/61
Page 2580
Section V: Plane Plots Gemcom for Windows
4. The Symbol Data area allows you to define which data will be
used to create the ranges that the different symbols will
represent. Enter the following parameters:
• Description. Enter a brief description, if desired.
If you are creating a symbol profile based on an extraction file:
• Symbol Column. This parameter allows you to determine the
data type of the numeric data used to define the ranges the
symbols will represent. Select one of the following options:
◊ Elevation. Select this option if the data represents an
elevation.
◊ Real Value. Select this option if the data type chosen is
a real value.
◊ Integer Value. Select this option if the data typechosen is an integer value.
Figure 20-1: Symbol Plot Profile Editor dialog box—Extraction File
Page 2581
-
8/18/2019 gemcom introduction
19/61
Page 2581
Exploration Chapter 20: Symbol Plane Plots
• # Decimal Places. Enter the number of decimal places you
wish to appear on the plot. By definition, an integer value
will have zero (0) decimal places.
If you are creating a symbol profile based on a workspace:
• Location Table. Select the name of the table in which the
field containing the location data (X, Y and Z) for the table
is located.
• Location Field. Select the name of the field in which thelocation data (X, Y, and Z) is found. (Usually, this will be
LOCATION.)
• Symbol Table. Select the name of the table containing the
field to be illustrated by the symbol plot.
• Symbol Field. Select the name of the field which contains
the data to be illustrated by the symbol plot.
5. The Symbol Definition area allows you to define which
symbols will be used to represent specific ranges of values
within the Symbol Field and how these symbols will appear in
the plot. Enter the following parameters for each range that you
wish to define:
• Lower Bound and Upper Bound. Enter a lower and
upper bound to define the desired range of values from the
symbol field.
• Symbol. Select the desired symbol from the pulldown list.
There are seventeen different symbols available:
Symbol Name
Ÿ Dot
+ Cross
* Asterisk¡ Circle
Page 2582
-
8/18/2019 gemcom introduction
20/61
Page 2582
Section V: Plane Plots Gemcom for Windows
Symbol Name
r Exx
∆ Triangle
Y D_triangle
⊕ Q_circle
◊ Diamond
¨ Square
Octagon
l Circle-filled
s Triangle-filled
u Diamond-filled
n Square-filled
Octagon-filled
NONE (No symbol)
• Colour. Select the desired symbol colour from the list.
• Size. Select the desired symbol size from the list. The sizes
are listed in millimetres and inches and range from 0.5 mm
(0.02”) to 25.0 mm (0.98”).
7. The Text Definition area allows you to define whether to
annotate your symbols with data from specified fields in the
workspace or variables in the extraction file, and if so, how that
data will appear. Data values can be displayed next to each
symbol from up to four workspace fields if you are creating the
profile from a workspace, or from any or all of the six available
variables (northing, easting, elevation, real field, integer field
and string field) if you are creating the profile from an
extraction file. Enter these parameters for each field or variableyou want to use as annotation:
Page 2583
-
8/18/2019 gemcom introduction
21/61
Page 2583
Exploration Chapter 20: Symbol Plane Plots
• Table Name. (This parameter appears only if you are
creating a profile from workspace data.) Select the name of
the table which contains the field you wish to use as
annotation from the list. Fields can be selected from theheader table or from the table that contains the coordinate
field (if different from the header table).
• Field Name. (This parameter appears only if you are
creating a profile from workspace data.) Select the name of
the field you wish to use as annotation from the list.
• Character Size. Select the desired text size from the list. The
sizes are listed in millimetres and inches and range from 1.5
mm (0.06”) to 8.0 mm (0.32”).
Justification. Seloect from the available justification
options to determine the positioning of the text relative to
the symbol.
Figure 20-2: Symbol text justification
• Rotation. Enter the desired orientation angle for your text, in
degrees counter-clockwise from horizontal. For horizontal text,leave this parameter blank.
Page 2584
-
8/18/2019 gemcom introduction
22/61
g
Section V: Plane Plots Gemcom for Windows
Figure 20-3: Symbol text orientation
There is no check between the text justification options and the
text orientation angles, so with some combinations it is possible for
one data value to be plotted on top of another.
•Colour Profile. Select a colour profile to use to displayyour text, if desired. For further information on colour
profiles, see Chapter 6: General Data Definitions, Volume I:
Core.
6. Click Save to save your symbol profile. Click Exit to close the
profile definition dialog box.
Preparing Symbol Plots
Once you have defined a symbol plot profile, you can prepare
symbol plots from extraction files or from workspaces.
1. Select either Tools }} Create Plane Plots }} Prepare Symbol Plot from
Extraction File or Tools }} Create Plane Plots }} Prepare Symbol Plot
!
Page 2585
-
8/18/2019 gemcom introduction
23/61
Exploration Chapter 20: Symbol Plane Plots
from Workspace. The Symbol Profile Selection dialog box will
appear.
2. Select the profile you wish to use. Only profiles created for thetype of symbol plot you are preparing will be listed.
3. Enter a name for the plot file. This file name will automatically
be assigned a GGP extension.
From Extraction Files
If you are preparing a symbol plot from an extraction file:
4. Select the extraction file you wish to use from the dialog box
that appears.
5. The Extraction File Symbol Map Generation statuswindow will appear, displaying the progress of the symbol plot.
When the process is complete, click OK to clear the window from
the screen.
From WorkspacesIf you are preparing a symbol plot from a workspace:
4. The Select Records to Process dialog box will appear. Select
the desired option.
5. The Workspace Symbol Map Generation status window will
appear, displaying the progress of the symbol plot. When theprocess is complete, click OK to close the window.
6. The Legend Creation Parameters dialog box will appear.
Enter the following parameters:
• Plot Legend File Name. Enter a name for the plot legend
file. A .GGP extension will automatically be assigned to thefile name. The default that appears is the name of the
Page 2586
-
8/18/2019 gemcom introduction
24/61
Section V: Plane Plots Gemcom for Windows
drillhole display profile. The file will be saved in the
appropriate sub-directory of the current project.
• Legend Window Width. Enter the width you want toassign to your legend window in world coordinates. If you
are using sections, a default appears representing 8 percent
of the section width.
• Legend Position X and Legend Position Y . Enter the X
and Y-axis coordinates to define where you want to position
the legend on the plot. This option is not relevant if you aregoing to bring the legend into its own viewport in QuickPlot.
• Colour of Legend Text. Select one of the sixteen standard
Gemcom colour choices.
7. Click OK.
Page 2587
-
8/18/2019 gemcom introduction
25/61
Exploration Chapter 21: Drillhole Plane Plots
Chapter 21
Drillhole Plane Plots
In this Chapter
• Introduction
• Trace Smoothing • Projections
• Drillhole Plot Profiles
• Reference Grids
• Preparing Drillhole Plots
Introduction
You can display data from drillhole or traverse workspaces onto
surfaces, plan views, vertical sections or inclined sections.Drillholes and traverses are displayed as trace lines projected onto
the plane, and data from any of the workspace tables can be
displayed in a variety of different formats at the collar location or
along the trace of each drillhole or traverse.
Drillholes on Surfaces
When you create a drillhole plot on a surface, the plot will show the
collar of the drillhole together with a vertical projection of the
drillhole trace onto the surface. No clipping takes place. The trace
will be annotated using the attributes defined in the drillhole plot
profile that you selected. No coordinate grid will be produced, and
the Define Reference Grid Profiles command will be dimmed.
Page 2588
-
8/18/2019 gemcom introduction
26/61
Section V: Plane Plots Gemcom for Windows
No coordinate transformation is performed on the point location:
the coordinates in the graphics file are the same as the coordinates
of the points in the workspace.
Drillholes on Plan Views
When you create a drillhole plot for a plan view, the plot will show
the portion of the drillhole trace that passes through the plan view
from the upper elevation limit to the lower elevation limit. All otherparts of the drillhole will be clipped from the map. The trace will be
annotated using the attributes defined in the drillhole plot profile
that you selected. No coordinate grid will be produced, and the
Define Reference Grid Profiles command will be dimmed.
Under normal circumstances, the projection onto the plan view will
be orthogonal. However, you can define a non-orthogonal projectionby entering average plunge and trend angles to modify the
direction of the projection. See “Projections” on page 2589 for more
details.
If your drillholes are vertical or near vertical, the projected trace
on each plan view will be very short. Any annotation (such as
assays, composites or rock types) will be liable to suffer from over-plotting. In addition, the orientation of the text will be based on the
projected azimuth of the drillhole trace and may not be
aesthetically pleasing.
If you want to make a map showing a single symbol for the
drillhole pierce point with the plan view annotated with data from
any of the tables, we suggest that you de-survey the tables that youwant to display and use the symbol mapping features of Gemcom
for Windows to produce the plot files.
No coordinate transformation is performed on the point location so
the coordinates in the graphics file are the same as the coordinates
of the points in the workspace.
!
Page 2589
-
8/18/2019 gemcom introduction
27/61
Exploration Chapter 21: Drillhole Plane Plots
Drillholes on Vertical and Inclined Sections
When you create a drillhole plot for a vertical or inclined section, the
plot will show the portion of the drillhole trace that passes through the
section corridor between the towards and away distances defined for
that section. All other parts of the drillhole will be clipped from the
map. The trace will be annotated using the attributes defined in the
drillhole plot profile that you selected. A coordinate reference grid, a
frame and, optionally, a plan view will be produced.
Under normal circumstances, the projection onto the section will beorthogonal. However, you can define a non-orthogonal projection by
entering average plunge and trend angles to modify the direction of
the projection. See “Projections” on page 2589 for details.
The coordinates of the graphics file are the local section
coordinates. See Chapter 6: General Data Definitions, Volume I:
Core for more information.
Projections
Traces are projected orthogonally (in other words, perpendicular) to
all types of planes. This means that the traces are projectedvertically onto surfaces and plan views, horizontally onto vertical
sections, and perpendicularly onto inclined sections.
You can also adjust the projections onto plan views and vertical and
inclined sections by defining average trend and plunge angles. This
will change the projection from an orthogonal projection to a non-
orthogonal projection. This projection is intended to project the dataalong an average planar surface that trends and plunges in a certain
direction. These angles, defined below, are illustrated in Figure 21-2.
• Trend. The azimuth of the principal direction of the planar
surface.
• Plunge. The angle from the horizontal at which the principaldirection of the planar surface dips.
Page 2590
-
8/18/2019 gemcom introduction
28/61
Section V: Plane Plots Gemcom for Windows
The towards and away thicknesses defined for the sections, and the
upper and lower elevation limits for plan views, form a projection
corridor for the planes. Portions of the trace and data that fall
outside the corridor are not included in the plots. The corridor for
Figure 21-1: Orthogonal projection of data
Figure 21-2: Definition of trend and plunge angles
Page 2591
-
8/18/2019 gemcom introduction
29/61
Exploration Chapter 21: Drillhole Plane Plots
surfaces has an infinite thickness, so the complete trace and all
data is always included.
Trace Smoothing
You can control whether to "smooth" the trace (i.e., interpret it as a
curve) or leave it as straight line segments between survey points.
This requires that you define a new field in the header table called
TRACE-TYPE with a string data type and a field length of one
character. If the field contains an "A" or "a", the drillhole will
automatically be smoothed with as many segments as required
based on the survey measurements (determined automatically). If
the field contains an "S" or "s", straight line segments will be drawn
between survey measurement points. If the TRACE-TYPE field is not
defined in the database structure, then the default will be to
smooth the trace segments.
Figure 21-3: Trace smoothing
Page 2592
-
8/18/2019 gemcom introduction
30/61
Section V: Plane Plots Gemcom for Windows
Drillhole Plot Profiles
You can control all the different features of the drillhole and
traverse plots. These include the following:
• The collar annotation.
• The style of the drillhole trace.
• The method of data display down the trace.
• The reference grid.
• The location plan view.
All of the display attributes that you define for a drillhole plot are
stored in a drillhole plot profile. Each profile is given a name and you
can define as many profiles as you want. When you prepare a drillhole
plot, you select the profile that you want to use from a list or by typing
its name.
Follow this procedure to create a drillhole plot profile:
1. Select Tools }} Create Plane Plots }} Define Drillhole Plot Profiles. The
Drillhole Plot Profile Editor dialog box will appear (see
Figure 21-4 and Figure 21-7).
2. Click Add. Type a name for your profile and click OK.
3. When adding or modifying a drillhole plot profile, you will have
to enter parameters into two main sections of the dialog box,
represented by two tabs across the top:
• Collar. The parameters listed under this tab allow you to
define the data to be used as collar annotations in the
drillhole plot, and how it will appear.
• Trace. The parameters listed under this tab allows you to
define drillhole trace annotations.
Enter the required parameters under both tabs. These
parameters are described in detail in “Collar Annotation”
(page 2593) and “Trace Annotation” (page 2598).
Page 2593
-
8/18/2019 gemcom introduction
31/61
Exploration Chapter 21: Drillhole Plane Plots
4. When all parameters are entered to your satisfaction, click Save.Click Exit to close the profile definition dialog box.
For further information on using profile definition dialog boxes, see
Chapter 4: Dialog Boxes, Volume I: Core.
Collar Annotation
You can annotate the collar of each drillhole or traverse on the plot
with information from up to four fields in the header table. In
addition, you can display the projection distance of both the collar
and the toe of the drillhole. You can control the fields, the text size,
the text colour, the position, and the orientation of this annotation.
When the projection distance of the collar and toe is shown, the
distances, which are shown in parentheses, are positive when the
collar or toe is "away" on the far side of the plane, and negative
when the collar or toe is "towards" on the near side of the plane as
you view it.
If the collar or toe is outside of the projection corridor (in otherwords, the distances of each side of the plane defined by their
Figure 21-4: Drillhole Plot Profile Editor (Collar tab)
Page 2594
-
8/18/2019 gemcom introduction
32/61
Section V: Plane Plots Gemcom for Windows
thicknesses) the annotation is positioned at the entry and exit
points of the hole and the corridor.
To define collar annotations, ensure that the Collar tab (see Figure21-4) in the Drillhole Plot Profile Editor dialog box is selected
by clickingit if necessary. Enter the parameters outlined in the
following sections.
Drillhole Trace Line
Only that portion of the drillhole trace that falls within the projection
corridor defined by the plane thickness will be displayed. The position
and orientation of the line plotted for the drillhole trace are determined
from the survey information for the drillhole or traverse. The line is
smoothed using a complex three-dimensional smoothing algorithm
that honours the survey data absolutely. You can control the amount of
smoothing (from no smoothing to extensive smoothing) using a fieldcalled TRACE-TYPE. (See “Trace Smoothing” on page 2591.)
Tickmarks appear at FROM and TO or DISTANCE values along the
trace. As well, special symbols are used to annotate the collar and
toe (see following section). If you prefer, you can choose to suppress
the display of any of the following:
• the trace line itself
• the tickmarks
• the collar symbol
• the pierce point symbol (through the plane)
The following parameters define how the drillhole trace line will
appear.
• Plot Hole Trace. Select this option if you want a trace of the
drillhole to appear on the plot.
• Colour of Trace. Select the colour of the trace from the sixteen
standard Gemcom screen colours. The colour of the trace on the
plotted output will depend on the type of plotter that you have and
the pen mapping that you have defined. See the QuickPlot onlinehelp for more information on plotter pen colours and pen mapping.
Page 2595
-
8/18/2019 gemcom introduction
33/61
Exploration Chapter 21: Drillhole Plane Plots
• Trend Correction Angle. If you want to change the drillhole
projection from an orthogonal projection to a non-orthogonal
projection, enter a trend correction angle This is the azimuth of
the principal direction of the planar surface. (See Figure 21-2.)
• Plunge Correction Angle. If you want to change the drillhole
projection from an orthogonal to a non-orthogonal projection,
enter a plunge angle. This is the angle from the horizontal at
which the principal direction of the planar surface dips. (See
Figure 21-2.)
Trace Symbol
There are five special symbols that are used to annotate the collar,
toe and pierce points.
Symbol Meaning
This symbol indicates the position of the collar of the
hole when it is inside the projection distances.
This symbol indicates the position of the toe of the
hole when in is inside the projection distances.
This symbol indicates the pierce point where the
drillhole trace passes through the plane.
This symbol indicates the pierce point where the
drillhole trace enters the projection corridor, andwhen the collar of the hole is outside the projection
distances.
This symbol indicates the pierce point where the
drillhole trace exits the projection corridor, and when
the toe of the hole is outside the projection distances.
Page 2596
-
8/18/2019 gemcom introduction
34/61
Section V: Plane Plots Gemcom for Windows
The following parameters define how these symbols are displayed.
• Plot Collar Symbol. Select this option if you want the symbolsto appear on the plot.
• Colour of Collar Symbol. Select the colour of the trace
symbols from the sixteen standard screen colours.
• Collar Symbol Size. Select a size for the symbol from the list.
Symbol sizes are defined in both millimetres and inches, and
appear on plots at the sizes defined. You can choose one of six
different sizes ranging from 1.5 mm (0.06”) to 8.0 mm (0.32”).
• Plot Pierce Point Symbol. Select this option if you want to
plot pierce point symbols where the drillhole trace pierces the
projection corridor.
Annotation Text
The following parameters allow you to control which fields are used
to create the collar annotation as well as the size, colour, position
and orientation of the annotation.
You can select up to four fields from the Header table to use ascollar annotation. For each of the fields, enter the following
parameters:
• Field Name. Select the name of the field in the Header table
you wish to use as collar annotation.
• Subfield. If you chose a coordinate field type in Field Name,above, select the desired coordinate (E, N or Z).
• Character Size. Data from each field selected can be plotted at
a unique size per field. Text sizes are defined in both
millimetres and inches, and appear on plots at the sizes defined.
You can choose one of six different text sizes ranging from 1.5
mm (0.06”) to 8.0 mm (0.32”).
Page 2597
-
8/18/2019 gemcom introduction
35/61
Exploration Chapter 21: Drillhole Plane Plots
• Colour. Select the desired text colour from the list.
• Position. The annotation can be located at either the collar
(the top) or the toe (the bottom) of the drillhole or traverse. The
fields used for the annotation can also be specified individually;
thus, annotation can appear at both the top and bottom of a
drillhole.
There are also several parameters that apply to all text annotation
from all chosen fields.
• Match Field Contents to Plane Name. Click the checkbox toselect records on a plane by plane basis by matching the
contents of a field in the header table against the plane names.
If the field contents match the plane that the plot is being
prepared for, the record will be used. If the field contents do not
match the plane name, the record will not be used. This option
is useful if you are creating drillhole plots for a set of planes,
not all of which will require the data from all records in theworkspace.
If you select this option, you will have to enter the following
parameter:
◊ Use Field Name. Select the field which contains the data
to which you want to compare the plane name.
Figure 21-5: Drillhole collar annotation
Page 2598
-
8/18/2019 gemcom introduction
36/61
Section V: Plane Plots Gemcom for Windows
• Plot Projection Distance. Select this option to plot the
projection distance as part of the collar annotation.
• Orientation. Select one of the three options illustrated in
Figure 21-5 to determine the positioning of the annotationrelative to the drillhole.
If you have selected more than one field, then the position of the
various fields will be adjusted relative to the collar position, as
illustrated in Figure 21-6.
Trace Annotation
You can annotate each side of the drillhole trace with data from any of
the secondary tables in the workspace, provided that the tables
selected have data in either interval (FROM-TO) format or distance
format to define the location of the information along the trace. Youcan display data from up to 16 fields in multiple tables on both the
right and the left side of the trace. The display method for each field
can be independent of the others.
To define trace annotations, ensure that the Trace tab in the
Drillhole Plot Profile Editor dialog box is selected by clickingit if
necessary.
Figure 21-6: Annotation with multiple fields
Page 2599
-
8/18/2019 gemcom introduction
37/61
Exploration Chapter 21: Drillhole Plane Plots
To add a trace annotation to the profile, click the Add button at theright-hand side of the dialog box. To edit an existing trace
annotation, select the display option cell for that annotation and
click the Edit button. In both cases, the Trace Definition Editor
dialog box will appear. Enter the following parameters:
• Display Option. Select the desired display option from the
following eight choices:
◊ Numerical or text data (“Fields”)
◊ Normal histograms
◊ Logarithmic histograms
◊ Normal line graphs
◊ Logarithmic line graphs
◊ Colour bars◊ Distances along the trace
Figure 21-7: Drillhole Plot Profile Editor (Trace tab)
and sample Trace Definition Editor
Page 2600
◊ P tt fill
-
8/18/2019 gemcom introduction
38/61
Section V: Plane Plots Gemcom for Windows
◊ Pattern fill
These display options are discussed in detail in the sections
below.
• Table Name. Enter the name of the table where the field used
to define the trace annotation is located. (This parameter is not
relevant if you selected Distances along the trace as the
Display Option.)
• Side. Select whether you want the trace annotation to be
plotted to the right or the left of the drillhole trace. Note that
the right side of the trace is the side that falls on your right
when you are standing at the collar looking down the hole.
• Offset. Position the field relative to the trace by entering an
offset distance, which will define how far to the left or right of
the trace the annotation will be plotted.
You will also need to enter additional parameters determined by
your choice of display option. These parameters are discussed in
detail in the sections below.
Numerical or Text Values (“Fields”)
You can display the data from up to four fields from any single
eligible secondary table alongside the hole trace. Each field is
separated by spaces, and the fields are all aligned along the
character closest to the space (the rightmost character if the
annotation is to the left of the trace, and the leftmost character if
the annotation is to the right of the trace).
When you select the Fields display option in the Trace Definition
Editor, a number of parameters will appear. The first parameter
defines text size:
• Character Size (Scaleable). Define the text size by entering
the character height in world coordinate (scaleable) units.
Page 2601
-
8/18/2019 gemcom introduction
39/61
Exploration Chapter 21: Drillhole Plane Plots
When the length of the FROM-TO or DISTANCEinterval is too short to
allow clear plotting of the field values without interference from
neighbouring values, you can either plot the values away from the
trace line, or you can suppress the values for the short interval
altogether.
• Suppress Intervals Shorter than. Enter a suppression
length. When the interval is shorter than the suppression
length, the annotation is suppressed.
• Offset Annotations with Intervals shorter than. Enter an
interval length greater than the suppression length. Intervalsshorter than this length but greater than the suppression length
will be plotted at normal size but will be offset from the trace of the
hole. The offset increases by the length of the annotation for every
three successive intervals and then reverts to zero.
When the interval is longer than the length of interval you define
for the either of these parameters, the annotation is plotted atnormal size in the normal position.
Drillhole
trace
Tickmarks at
"FROM" and
"TO" or
"DISTANCE"
values
Decimal places
controlled by
workspacedefinition
Second field (optional)
First field
Third field (optional)
Figure 21-8: Trace annotation with text (fields)
Page 2602
Drillhole
-
8/18/2019 gemcom introduction
40/61
Section V: Plane Plots Gemcom for Windows
Drillhole
trace
Successive
intervals
shorter than
suppressionlength
No annotation of
these intervals
Figure 21-9: Suppressed text annotation
Drillhole
trace
Successive
intervals
shorter than
minimumlength
Annotation of
these intervalsis offset
Figure 21-10: Offset text annotation
Drillhole
trace
Length of
interval
Character height
defined in same units as
used in workspace (e.g.,
if interval is 5 feetlong, character height
should be about 4)
Figure 21-11: Normal text annotation
Page 2603
There are also four parameters to be entered for each of the fields
-
8/18/2019 gemcom introduction
41/61
Exploration Chapter 21: Drillhole Plane Plots
There are also four parameters to be entered for each of the fields
that you wish to use to annotate the trace. These are as follows:
•Field Name. Select the name of the field you wish to use as thetrace annotation.
• Sub. If you selected a coordinate field type in Field name,
above, select the coordinate you wish to use (X, Y or Z).
• Colour Profile. Select a colour profile to determine the colour
of the field according to its data values. See Chapter 6: General
Data Definitions, Volume I: Core for more information on colour
profiles.
• Display Mask. This parameter determines the width of each
field in the trace annotation and the number of decimal places
to be shown, and allows the insertion of commas to make
reading of large numbers easier. Here are some examples,
assuming the number to be displayed is 123456.789:
Mask Result
nnnnnnnn.n 123456.8
nnn,nnn.nnnn 123,456.7890
nnnnnnn 123456
Normal Histograms
You can select one field that has a numeric data type from any
eligible secondary table, and display the field value as a histogram
bar down the side of the drillhole trace.
When you select the Histogram display option in the Trace
Definition Editor, a number of parameters will appear.
• Field Name. Select the field which contains the values youwish to use to plot the histogram bar.
Page 2604
-
8/18/2019 gemcom introduction
42/61
Section V: Plane Plots Gemcom for Windows
• Scale Factor. Define a scale factor. The length of the
histogram bar is determined by multiplying the data value in
the field by this scale factor. The resultant value is used as a
scaleable distance that will control the length of the bar. For
example, if the database units are feet, and the scale of the plotis to be 1 inch:50 feet, a value of 0.35 % (for a copper assay) with
a scale factor of 50 will result in a value of 17.5, which will
result in the bar being plotted 0.35 inches long. If the scale of
the plot is changed to 1 inch:100 feet, the length of the plotted
bar will halve to 0.175 inches.
• Lower Bound and Upper Bound. The values used to plot thehistogram bar are obtained from the selected field between
upper and lower bounds. If the value in the field is greater than
the upper bound, the value is still used but is set to the upper
bound that you defined. If the value is lower than the lower
bound, the value is not used.
• Scale Bar. You can plot a scale bar for each drillhole thatshows the relationship between the length of the histogram bar
Drillhole
trace
Drillhole
intervalHistogram bar
Optional
scale bar
Upper bound
of data limits
Bar length = field value * scale factor
Figure 21-12: Trace annotation with histograms
Page 2605
to the values from the field. Select one of the following four
-
8/18/2019 gemcom introduction
43/61
Exploration Chapter 21: Drillhole Plane Plots
options:
◊
Both. The scale bar will be plotted at both the collar and thetoe.
◊ Collar. The scale bar will be plotted at the collar of the hole.
◊ Toe. The scale bar will be plotted at the toe of the hole.
◊ None. No scale bar will be plotted.
• Colour Profile. Select a colour profile to use to define the
colour of the bar.
• Char Size. Enter a character height in world coordinate
(scaleable) units to define the size of the text of the trace
annotation.
• Num Intervals. If you chose to display one or both scale bars,
enter the desired number of intervals between the upper and
lower bounds of the data limits. This will determine the number
of tickmarks and associated numbers that will be displayed
along the scale bar(s).
• Annotate Peaks. Enable this option if you want to annotatethe histogram bar with values that are greater than the upper
bound that you defined.
•
Length of
histogram
bar is
clipped to
upper bound
Upper bound
of data limits
Annotation of
field values
greater than
data limits
Page 2606
3 log cycles
-
8/18/2019 gemcom introduction
44/61
Section V: Plane Plots Gemcom for Windows
Figure 21-13: Annotation of histogram peaks
Log Histograms
You can select one field that has a numeric data type from any eligible
secondary table and display the field value as a logarithmically scaled
histogram bar down the side of the drillhole trace.
When you select the Log Histogram display option in the Trace
Definition Editor, a number of parameters will appear. The
following parameters are identical to those for normal histogram
annotation. See “Normal lHistograms” on page 2603 for details.
• Field Name.
• Colour Profile.
• Lower Bound. Note that the lower bound must be greater
than zero. You cannot take logarithms of values that are lessthan or equal to zero.
Drillhole
trace
Drillhole
interval
Histogram bar
Optional
scale bar
Upper limit
of log cycles
Length of bars
determined from field
value and log scaling
Figure 21-14: Annotation with log histogram
Page 2607
• Upper Bound.
-
8/18/2019 gemcom introduction
45/61
Exploration Chapter 21: Drillhole Plane Plots
• Annotate Peaks.
• Scale Bar.
• Char Size.
The length of the histogram bar is determined by multiplying the
value in the field by a scale factor that is calculated from the
number of log cycles that you select, the upper cycle limit, and the
length that you define for the uppermost log cycle. The resultantvalue is used as a scaleable distance that will control the length of
the bar. For example, if you select four log cycles with an upper
limit of 100, and define the length of the upper cycle to be 50
scaleable units, you will get a histogram scaled as follows:
Field Values Ground Units
0.0 - 0.1
0.1 - 1.0
1.0 - 10.0
10.0 - 100.0
0.0 - 12.5
12.5 - 25.0
25.0 - 37.5
37.5 - 50.0
Enter the following parameters to determine the scale factor:
• Log Cycles. Select the number of log cycles to use to determine
the scale factor. You can choose from one to six cycles.
• Upper Length. Enter a length to be used for the uppermost log
cycle.
• Upper Limit. Enter an upper cycle limit.
Normal Line Graphs
You can select one field that has a numeric data type from any
eligible secondary table and display the values from the field as aline graph down the side of the drillhole trace. When you select the
Page 2608
-
8/18/2019 gemcom introduction
46/61
Section V: Plane Plots Gemcom for Windows
Line Graph display option in the Trace Definition Editor, a
number of parameters will appear.
• Field Name. Select the field which contains the values you
wish to use to plot the histogram bar.
• Scale Factor. Define a scale factor. The position of the line
graph is determined by multiplying the data value in the field
by this scale factor. The resultant value is used as a scaleable
distance, which is the distance that the line is plotted from the
trace. For example, if the database units are feet, and the scale
of the plot is to be 1 inch:50 feet, a value of 0.35 % (for a copper
assay) with a scale factor of 50 will result in a value of 17.5,
which will result in the line being plotted 0.35 inches from the
trace. If the scale of the plot is changed to 1 inch:100 feet, the
distance to the plotted line will halve to 0.175 inches.
• Lower Bound and Upper Bound. The values used to plot the
histogram bar are obtained from the selected field between
upper and lower bounds. If the value in the field is greater than
Position of points on line
determined from field
value times scale factor
Upper bound
of data limits
Optional
scale bar
Line graph
Drillhole
trace
Drillhole
interval
(tickmarks
not plotted)
Figure 21-15: Trace annotation with line graphs
Page 2609
the upper bound, the value is still used but is set to the upper
bound that you defined If the value is lower than the lower
-
8/18/2019 gemcom introduction
47/61
Exploration Chapter 21: Drillhole Plane Plots
bound that you defined. If the value is lower than the lower
bound, the value is not used.
• Scale Bar. You can plot a scale bar for each drillhole that
shows the relationship between the line graph and the values
from the field. Select one of the following four options:
◊ Both. The scale bar will be plotted at the collar and the toe.
◊ Collar. The scale bar will be plotted at the collar of the hole.
◊ Toe. The scale bar will be plotted at the toe of the hole.
◊ None. No scale bar will be plotted.
• Annotate Peaks. Enable this option to annotate any peaks
along line graph that have values greater than the upper
bound.
•
Position
of line is
adjusted
to upper
bound
Upper bound
of data limits
Annotation of
field values
greater than
data limits
Figure 21-16: Annotation of line graph peaks
• Line Colour. Select a colour for the line graph.
• Char Size. Enter a character height in world coordinate
(scaleable) units to define the size of the trace annotation text.
Page 2610
3 l l
-
8/18/2019 gemcom introduction
48/61
Section V: Plane Plots Gemcom for Windows
• Num Intervals. If you chose to display one or both scale bars,
enter the desired number of intervals between the upper and
lower bounds of the data limits. This will determine the number
of tickmarks and associated numbers that will be displayed
along the scale bar(s).
Log Line Graphs
You can select one numeric-type field from any eligible secondary
table and display its value as a logarithmically scaled line graph
down the side of the drillhole trace.
When you select the Log Line Graph display option in the Trace
Definition Editor, a number of parameters will appear. The
Drillhole
interval
(tickmarks
not plotted)
Position of line
determined from fieldvalue and log scaling
Line graph
Drillhole
trace
Optional
scale
bar
3 log cycles
Upper limit
of log cycles
Figure 21-17: Trace annotation with log line graphs
Page 2611
following parameters are identical to those for normal line graph
annotation. See “Normal Line Graphs”on page 2607 for details.
-
8/18/2019 gemcom introduction
49/61
Exploration Chapter 21: Drillhole Plane Plots
annotation. See Normal Line Graphs on page 2607 for details.
•Field Name.
• Line Colour.
• Lower Bound. Note that the lower bound must be greater
than zero. You cannot take logarithms of values that are less
than or equal to zero.
• Upper Bound.
• Annotate Peaks.
• Scale Bar.
• Char Size.
The distance of the line from the trace is determined by multiplying
the field value by a scale factor that is calculated from the number
of log cycles that you select, the upper cycle limit, and the length
that you define for the uppermost log cycle. The resultant value is
used as a scaleable distance that will control the position of the
line. For example, if you select four log cycles with an upper limit of
100, and define the length of the upper cycle to be 50 scaleable
units, you will get a line graph scaled as follows:
Field Values Ground Units
0.0 - 0.1
0.1 - 1.0
1.0 - 10.010.0 - 100.0
0.0 - 12.5
12.5 - 25.0
25.0 - 37.537.5 - 50.0
Enter the following parameters to determine the scale factor:
• Log Cycles. Select the number of log cycles to use to determine
the scale factor. You can choose from one to six cycles.
Page 2612
D illh l
-
8/18/2019 gemcom introduction
50/61
Section V: Plane Plots Gemcom for Windows
• Upper Length. Enter a length to be used for the uppermost log
cycle.
• Upper Limit. Enter an upper cycle limit.
Colour Bars
You can select one field with a numeric or text data type from any
secondary table and use it to enhance the display of the drillhole
trace with colours.
When you select the Colour Bar display option in the Trace
Definition Editor, a number of parameters will appear.
• Field Name. Select the field you wish to use for the trace
annotation.
Width of bar defined by user
Drillholeinterval
Colour fill determined byfield values and colour profile
Drillholetrace
Figure 21-18: Trace annotation with colour bars
Page 2613
• Colour Profile. Select a colour profile to define the bar colours.
The colours selected will depend on the data values in the field
-
8/18/2019 gemcom introduction
51/61
Exploration Chapter 21: Drillhole Plane Plots
p
and the ranges as defined in the colour profile. See Chapter 6:
General Data Definitions, Volume I: Core for more information.
• Bar width. You can control the thickness of the colour bar by
defining a width in scaleable units (the same way as you define
scaleable character sizes) and by optionally filling the colour
bar. The density of the fill is determined by the number of fill
lines and the width of the colour bar.
• Num Lines. Enter the number of fill lines to use.
• Char Size. If you enabled Plot Colour Field Value (below), you
can define the text size by entering the character height in
world coordinate (scaleable) units.
• Suppress Intervals Shorter Than. Enter the length of the
shortest interval for which you would want annotationdisplayed. Any intervals shorter than this length will not be
annotated.
• Offset Annotations with Intervals Shorter Than. Enter an
interval length greater than the suppression length. Intervals
shorter than this length but greater than the suppression
length will be plotted at normal size but will be offset from thetrace of the hole. The offset increases by the length of the
annotation for every three successive intervals and then reverts
to zero.
• Plot Colour Field Value. Enable this option to annotate the
colour bar with the actual values from the fields represented by
specific colours on the bar.
• Colour Fill. Enable this option to fill each section along the colour
bar with the appropriate colour according to the colour profile.
• Plot Interval Tick Marks. Enable this option to plot interval
tick marks along the colour bar.
Page 2614
Drillhole collar
-
8/18/2019 gemcom introduction
52/61
Section V: Plane Plots Gemcom for Windows
Distances
You can place tick marks at regular intervals along the drillhole trace
and annotate them with the distance from the collar. When you select
the Distance display option in the Trace Definition Editor, the
following parameters will appear.
• Tick Interval. Enter the desired interval between tickmarks
along the trace.
• Colour. Select a colour for the annotation.
• Char Size. Define the text size by entering the character
height in world coordinate (scaleable) units.
• Decimals. Select the number of decimal places to be used(between 0 and 9).
Drillhole
trace
Annotation showingdistances along drillholetrace from collar
2 5 .0
5 0 .0
7 5 .0
10 0 .0
12 5 .0
Figure 21-19: Trace annotation with downhole distances
Page 2615
-
8/18/2019 gemcom introduction
53/61
Exploration Chapter 21: Drillhole Plane Plots
Pattern Fill
You can select one field with a numeric or text data type from anysecondary table and use it to enhance the display of the drillhole trace
with patterns. When you select the Pattern Fill display option in the
Trace Definition Editor, the following parameters will appear.
• Field Name. Select the field you wish to use for the annotation.
• Trace width. You can control the thickness of the pattern bar
by defining a width in scaleable units (the same way you define
scaleable character sizes).
• Colour Profile. You define the colour of the bar using a colour
profile. The colours selected will depend on the data values in
the field and the ranges defined in a colour profile. See
Chapter 6: General Data Definitions, Volume I: Core for more
information about colour profiles.
Pattern fill determined by fieldvalues and pattern profile
Width of bar defined by user
Drillholetrace
Drillholeinterval
Figure 21-20: Trace annotation with pattern fill
Page 2616
• Pattern Profile. You can define the pattern of the bar using a
polygon hatching profile. The patterns selected will depend on the
d t l i th fi ld d th d fi d i th h t hi
-
8/18/2019 gemcom introduction
54/61
Section V: Plane Plots Gemcom for Windows
data values in the field and the ranges as defined in the hatching
profile. For more information on polygon hatch patterns, seeChapter 6: General Data Definitions, Volume I: Core.
Reference Grids
Vertical and inclined sections can be annotated with a frame and a
reference grid showing the intersection of the vertical or inclined
section with the coordinate system for the project. You can define the
spacing of the northing, easting and elevation lines, the spacing of
reference tick marks along the section, the colour and size of the
annotation, and the line types and colours by creating a Reference Grid
Profile.
Plan view grid annotation is provided by the coordinate grid options
in QuickPlot. See the QuickPlot online help for details.
Reference Grids on Inclined Sections
To create a reference grid profile to be used with inclined sections,
follow this procedure:
1. Select an inclined section as the active plane (see page 2570 for
procedure).
2. Choose Tools }} Create Plane Plots }} Define Reference Grid Profiles. The
Inclined Section Reference Grid Editor dialog box will appear.
3. Click Add and enter a name for your grid profile. Click OK.
4. Enter the following parameters to determine the appearance of
the reference grid:
• Grid Type. Select one of the following three options:
◊ Full. This option displays all grid lines on the completedplot.
Page 2617
-
8/18/2019 gemcom introduction
55/61
Exploration Chapter 21: Drillhole Plane Plots
◊ Partial. This option displays only the grid line
intersections on the completed plot.
◊ None. This option does not display any portion of the
grid lines on the completed plot.
Full Grid Partial Grid
Figure 21-22: Full and partial grids
• Frame. You can display a frame around the four edges of
the plane. Select a colour for this frame from among the
standard Gemcom screen colours.
Figure 21-21: Inclined Section Reference Grid Editor dialog box
Page 2618
• Distance Tickmark Spacing . You can display small tick
marks along the bottom and top edges of the plane. These
tick marks are useful for establishing plan control when
-
8/18/2019 gemcom introduction
56/61
Section V: Plane Plots Gemcom for Windows
tick marks are useful for establishing plan control when
digitizing in the plane's local coordinate system. Enter adistance to define how far from the left edge of the plane the
tickmarks are placed in the measurement units of your
project (i.e., either feet or metres).
• Length of Tickmark. Define the length of the tickmarks in
the measurement units of your project (i.e., feet or metres).
• Character Size. The size of reference grid text annotations
are defined in both millimetres and inches and appear on
plots at the sizes defined. You can choose from six different
text sizes ranging from 1.5 mm (0.06”) to 8.0 mm (0.32”).
5. You can display the intersection of the northing, easting and
elevation coordinates. Enter the following parameters for each
of the three types of coordinate lines:
• Spacing . Enter the distance between the lines.
• Line Type. Select the desired line type from a list of the
defined line types.
• Colour. Selected the desired colour from among the sixteenstandard Gemcom screen colours.
6. Click Save to save your parameters under the profile name you
entered in step 3. Click Exit to close the profile definition dialog
box.
Reference Grids on Vertical Sections
To create a reference grid profile to be used with vertical sections,
follow this procedure:
1. Select a vertical section as the active plane (see page 2570 for
procedure).
Page 2619
-
8/18/2019 gemcom introduction
57/61
Exploration Chapter 21: Drillhole Plane Plots
2. Choose Tools }} Create Plane Plots }} Define Reference Grid Profiles. The
Vertical Section Reference Grid Editor dialog box will appear.
3. Click Add and enter a name for your grid profile. Click OK.
4. Most of the parameters required are the same as those requiredfor a reference grid for inclined sections. Enter these
parameters as outlined in steps 4 and 5 in the section above.
5. When preparing reference grids for vertical sections, you can
add a small plan view either above or below the plane plot. This
plan view shows the location of the plane line, the towards and
away projection distances, and the locations and traces of thedrillholes shown on the plane.
The position of the plane is shown by the solid line running along
the centre of the plan view. The towards thickness is shown
between the plane line and the dotted line running along the
bottom edge of the plan. The away thickness is shown between the
plane line and the dotted line at the top edge of the plan.
Figure 21-23: Vertical Section Reference Grid Editor
dialog box
Page 2620
Plan View
Section line
-
8/18/2019 gemcom introduction
58/61
Section V: Plane Plots Gemcom for Windows
All text and drillhole trace attributes are the same as for the
drillhole plane itself. Enter the following parameters to
determine how the plan view will be plotted:
• Plan View. Select one of the following three options todetermine where on the plot the plan view will be placed:
◊ Top. Select this option to place the plan view above the
plane plot.
◊ Bottom. Select this option to place the plan view below
the plane plot.
◊ None. Select this option if you do not want to plot a plan
view on your vertical plane plot.
• Width Outside Projection. You can control the distance of
the plan view from the top edge or bottom edge of the plane
by defining a distance in the units of your project.
Distance between plan
view and section
Distance between border
and section corridor
Border around
plan view
Border around
section view
"Towards" thickness
"Away" thickness
Section View
Figure 21-24: Plane plot plan view
Page 2621
• Spacing Between Plan View and Section. You can also
define the space between the frame of the plan and the
plane corridor by defining a distance in world coordinate
-
8/18/2019 gemcom introduction
59/61
Exploration Chapter 21: Drillhole Plane Plots
p y g
(scaleable) units.
• Plot Topo Data in Plan View. You can also show contour
lines from the project status map. Only the portions of the
data that fall within the towards and away distances are
included in the plot. Select Yes or No.
Preparing Drillhole Plots
Once you have defined a drillhole plot profile and a grid profile, you
can prepare drillhole plots from your workspace. Note that the
active workspace must be a drillhole or traverse workspace.
Follow this procedure to prepare a drillhole plot of a plane or set of
planes:
1. Select the desired plane type and plane or set of planes (see
page 2570 for further information).
2. Choose Tools }} Create Plane Plots }} Prepare Drillhole Plot from
Workspace.
3. If you selected vertical or inclined sections in step 1, the
Reference Grid Profile list will appear. Select the grid
display profile you wish to use and click OK.
4. The Section Display Profile list will appear. Select the
desired drillhole plane plot display profile and click OK.
5. In the file creation dialog box that appears, enter the name of
the GGP file that you wish to create. Do not type the GGP suffix:
it will be added to your file name automatically. The default file
name SECTION is entered for you, but can be easily overwritten.
If you are creating drillhole plots for a set of planes, each plot will
be given the same name, and will be saved in the plane’s unique
-
8/18/2019 gemcom introduction
60/61
Page 2623
You can now view your drillhole plane plot(s) on-screen, or print them
by using QuickPlot. See “Viewing Prepared Data” on page 2571.
-
8/18/2019 gemcom introduction
61/61
Exploration Chapter 21: Drillhole Plane Plots