wdss-ii training module i an overview of the wdss-ii display
TRANSCRIPT
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WDSS-II Training Module I
An overview of the WDSS-II display
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What is WDSS-II? Infrastructure to support application
development, data ingest and distribution, configuration, and output data formats.
Real-time and off-line data integration of data from multiple radars and other sensors.
Interactive 4D Display designed specifically to effectively manage and provide rapid access to the most important information for decision-making
Multi-sensor Algorithms to detect, diagnose and predict severe weather events.
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The WDSS-II display
The display is essentially just a GUI-based algorithm
Any data that can be viewed in the display may be accessed by any other algorithm!
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The WDSS-II display The aim of this module is to present the
underlying concepts. The version of the display you are using may
be different. The display is constantly evolving in response
to user feedback and requirements The knobology may be different
Try to perform the steps as you go through this presentation
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Operating systems
Red Hat Enterprise 3 and 4 Windows XP (display only)
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Starting up rssd “rssd” runs as a daemon that controls:
product notification (lets processes know that a new product is available to fetch)
Data transfer between machines Step 1: configure .rssd.conf Step 2: type “rssd” at command-prompt
It should run until you reboot the machine – no need to start it every time
Environment variable RMTPORT to set port Set RMTPORT to 50000 within NSSL
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Starting up rssd
Edit .rssd.conf (in your home directory)Client: 172.16.*.*Client: 172.18.*.*Path: /tmpPath: /data
“Client” tells which computers are allowed to connect to this one
“Path” tells which directories they are allowed to browse No need to include subdirectories (.e.g.
/data/may3) if their containing dir is in the path.
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rssd for multiple users
If you have multiple users on the same machine: set RMTPORT to /tmp:50000 Can use any directory that is world-
writeable
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Starting up wg (the WDSS-II GUI) % wg –c myConfigFileName
Starts the WDSSII GUI. Saves your session upon exit in myConfigFileName
Also, loads the old session from myConfigfileName on startup.
You can save multiple configurations (e.g. different settings for archived cases or real-time)
% wg Starts the WDSSII GUI Uses a default configuration file “.wgpref”
Add “--verbose” to the command line to help diagnose run-time errors.
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Wg Layout
Each tab (left) controls a different functionality:
Control loaded products
Controls for camera / readout / etc.
Maps Connect to and
manage data sources
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Connecting to a real-time data source
At NSSL, there are a number of real-time data sources that can be connected to very simply:
Click: “Sources” / “Add”
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Connecting to a real-time data source
Click on the data source of interest
Set the history (next slide)
Click “add”
machine
Path to the index
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Connecting to a real-time data source: setting the history
“History” is how many minutes (default = 30) that will be maintained in the index from the most recent time.
Having a long history (e.g. “All”) can slow down initial connection times and use more memory – use only for archived cases.
For real-time data, use an amount of time greater than the length of time you expect to loop.
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Connecting to a real-time data source: additional notes
An index of existing real-time data sources may be listed in an XML file and used as your default selections in the sources page (see tensor:rindex.xml) May be changed in the “preferences”
dialogue Real-time system status page:
http://tensor/cgi-bin/rupdate/radarUpdate.pl?group=REALTIME
Or just visit the tensor web site and click on “WDSSII Real-time Radar Status”
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Connecting to an existing archive data source
1. Give the source a name
2. Enter the location of the index file
3. Select the protocol (next slide)
4. Set the history to “all”
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Data sources: index protocols
Indices are lists of data products and where they are located (local or remote). WDSSII natively supports three index protocols:
xmllb – a “linear buffer” file Allows for real-time notification of new products Has a limited number of records (~ 32000)
xml – a text index file orpg – an index of ORPG products Additional types may be added as plug-ins.
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Sources: Loading a product
This is a product list for each source. Single click on the product will open up
“category” menu Double click on product will load the product in
the first category Click on a time will load the product at that time
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Sources: Other notes
You can delete a source completely if you are finished with it.
If not using a source, disconnecting may speed things up on a slower computer or network.
If a real-time source stops updating, then try reconnecting.
Change the history time by clicking here.
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Viewing multiple products in one window Two or more image products from the
same source cannot be viewed in the same window – one will always be in front. This is configrable
Images from two different sources may be overlaid on each other: Use hide / only to avoid confusion
The highlighted product in the product selection tab will always be in front
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Viewing multiple products in one window
Notes on time: If browsing backward
in time, the highlighted product is considered most recent – newer data from other sources will not be displayed
In Auto Update mode, simulation time is the most recent product from any source
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Viewing multiple products in one window
Controlling the product view:
Don’t show the highlighted product
Show only the highlighted product highlighted product
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Real-time: Auto update
Auto Update: listen for new products on an LB an automatically update to the latest one.
Stepping backward in time will turn off Auto Update Can use auto-update when doing playback
(w2simulator) also
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Looping products
Turn on a loop for the current window Looping controls are found under
Options / Preferences
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Color Key
Turns on the color bar for all products in this window
Can be edited (more on this in a later session)
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Navigating a multi-slice product
Browse up/down in current volume
Browse up/down in “virtual volume” (most recent slices) – this is how most WDSS-II algorithms operate
Green = current volume scan
Red = previousvolume scan
Step forward in time
Step back in time
Step to most recent time
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Multiple windows Controlled by “view” in top menu bar “New Window”: adds an empty new
window “Set Main Window”: choose which
window is attached to the controls at the bottom
“Main Window” / “All windows”: turn on/off auto update, auto snapshot, and color key
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Multiple windows: View
Tiled Tiled without controls
Right side
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Navigation: mouse controls
Pan: left mouse, move in direction desired
Zoom: middle mouse, move up or down
Pop-up menu: right mouse
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Right mouse pop-up menu Swap with main window: put this one in the
main window spot and connect to controls Set product / time / subtype / Auto update /
Loop / Show Color Key / Show readout-- set these items for this window
Group: sync with other window Rename: name this window Take snapshot Delete this window
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Sync Group
Put multiple windows in the same sync group” to make them pan / zoom / tilt / time match, etc.
Flexible, exact synchronization types are controlled under the preferences window
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Auto Snapshot
Take a snapshot each time a new product appears
Controlled by preferences May be used to automatically
generate static images, e.g. for putting on the web
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Options menu (top bar)
Data readout options: Raw value Lat / Lon Azimuth / Range (polar only) Height MSL and Above Radar Level
Preferences
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Options / Preferences / Windows
Each Sync group may be loosely or complexly coupled
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Options / Preferences / Snapshot
Filename naming convention:
%p = product name and subtype
%t = time %c = count
Use as an alternative to %t
Simplifies scripts Snapshots are
what’s visible in window
Same size as window Unless “custom size”
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Options / Preferences / Readout
Same as options menu
English / Metric – controls for data readout as well as tables, range rings, etc.
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Options / Preferences / Display
Font size for icons, text
Dynamic slice: increase value for higher resolution. This may slow down machines with limited graphic memory.
Level of Detail culling: keep only the most important icons as you zoom out.
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Options / Preferences / Cache
Cache: purely memory-dependent. Products are not preloaded into the cache. If you like lots of history or lots of products, use a bigger cache. Check memory usage with "top" and compare to your machine's memory
Clear Color Maps if you edited one of them
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Options / Preferences / Paths
Path to real-time index location This is where the list
of sources for “Sources / Add” come from.
Can create similar file on your machine Can collaborate with
others in lab machine:path-to-xml Can have multiple
Separate using ;
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Options / Preferences / Loop
Set the looping parameters
The bar at the top gives a visual of how the loop will behave
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Dynamic cross section / CAPPI To begin: choose “Create” / “Dynamic Slice
or CAPPI” on the product navigation menu Any 3D data field (polar or Lat/Lon) may be
used as input
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Dynamic cross section / CAPPI
Click create again and draw a line with left mouse
Click “Reset” to start from scratch
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Dynamic cross section / CAPPI
Dynamically drag the small boxes to change the cross section:
Middle box: move cross section
2nd / 4th boxes: rotate cross section
End boxes: move only this end, keeping the other fixed
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Dynamic cross section / CAPPI
Choose “CAPPI” and draw a box with left mouse for a constant-altitude plot
Middle blue bar or shift-middle controls altitude
Note altitude at top
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Dynamic cross section / CAPPI
Shift-left mouse controls tilt
Click “plan view” to go back to zenith viewing angle
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Dynamic cross section / CAPPI
Turn off interpolation to see original data field
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B-scan (table readout)
Check “table” in the navigation pane to bring up a table of raw data values
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Tables, Trends, and Icons
point data (such as cell centroids, rain gauges, etc) are stored in tables.
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Tables, Trends, and Icons
Two table types:
Pop-up window
Inview
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Tables, Trends, and Icons
Features: Past tracks Icons (w/
height poles for 3D view)
Trends Table sort
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End of WDSS-II Training Module I