gis & health espm 9: w 5-8 april 7, 2010 instructors: maggi kelly kevin koy mark o’connor...

GIS & HealthGIS & Health

ESPM 9: W 5-8ESPM 9: W 5-8

April 7, 2010April 7, 2010

Instructors:Instructors:

Maggi KellyMaggi Kelly

Kevin KoyKevin Koy

Mark O’ConnorMark O’Connor

Geospatial Innovation FacilityGeospatial Innovation FacilityCollege of Natural Resources - UC College of Natural Resources - UC

BerkeleyBerkeleyhttp://gif.berkeley.eduhttp://gif.berkeley.edu

ESPM 9 – GIS and Health - Spring 2009

Today’s ScheduleToday’s Schedule

• LectureLecture– GIS IntroductionGIS Introduction– GIS Functions you will use todayGIS Functions you will use today

• Lab 1Lab 1– Getting to know GISGetting to know GIS


Geographic Information SystemsGeographic Information Systems

• GIS DefinitionsGIS Definitions– A GIS is a system for the: entry and A GIS is a system for the: entry and

editing, storage, query and editing, storage, query and retrieval, transformation, analysis, retrieval, transformation, analysis, and display (soft copy) and printing and display (soft copy) and printing (hard copy) of spatial data(hard copy) of spatial data

– Digital spatial data from many Digital spatial data from many sources sources

• Key point: All data in a GIS is Key point: All data in a GIS is georeferencedgeoreferenced

– located by means of geographical located by means of geographical coordinates with respect to some coordinates with respect to some reference systemreference system

– This is how a GIS differs from This is how a GIS differs from computer-aided drafting or computer-aided drafting or graphics programgraphics program


Data

Spatial Data FormatsSpatial Data Formats• VectorVector • Raster/GridRaster/Grid


Raster


Vector


Points, nodes

Lines, arcs

Polygons, objects

Raster, pixels,

grid cells

DataData

Measurement of point pattern

Distance from roads, length of

flow path

Patch size, Patch shape

Pattern, connectivity

Sample points, Disease cluster…

Animal behavior,

water quality…

Areas of protection or

invasion…

Animal movement,

invasive species

dispersal…

AnalysisAnalysis

GIS: Linking Spatial Data with Attribute DataGIS: Linking Spatial Data with Attribute DataAttributesAttributes Process / Process /

InterpretatiInterpretationonFast food

location, organic food

stand location…

Walking path to work…

Hospital service zone…

Access to fresh food…


Database Files


Spatial Data AttributesSpatial Data Attributes


Vector Data


GIS Software you will useGIS Software you will use

• ESRI’s ArcGIS is the ESRI’s ArcGIS is the software that you will software that you will use for the labs. use for the labs.


Arc MapArc Map

Create maps

Viewand edit data Analyze data

(Geoprocessing)


Arc CatalogArc Catalog

View data (like Windows Explorer)

Graphicalpreviews

Metadata

Tables


Arc ToolboxArc Toolbox

Map Projections

Tools for commonly used tasks


Functions that you will useFunctions that you will use

• There are a number of functions that you will use in the lab There are a number of functions that you will use in the lab today:today:– Navigation toolsNavigation tools– Query / Select by attributeQuery / Select by attribute– BufferBuffer– ClipClip– Merge & DissolveMerge & Dissolve– Making a MapMaking a Map– Symbology/DisplaySymbology/Display


Data Query


Geospatial Query:Geospatial Query:POINTS near LINESPOINTS near LINES

Select by locationSelect by location: Toxic release sites within 1 mile of a river: Toxic release sites within 1 mile of a river

Image credit: K. Kurland, 2006Image credit: K. Kurland, 2006


Geospatial Query:Geospatial Query:POINTS near POINTSPOINTS near POINTS

Select by locationSelect by location: Schools within ½ mile of polluting : Schools within ½ mile of polluting companiescompanies



Geospatial Query:Geospatial Query:POLYGONS intersecting LINESPOLYGONS intersecting LINES

Select by locationSelect by location: Municipalities that intersect : Municipalities that intersect InterstatesInterstates



Geospatial Query:Geospatial Query:LINES intersecting POLYGONSLINES intersecting POLYGONS

Select by locationSelect by location: Lines: Lines intersectingintersecting polygonspolygons



Function: Dissolve/MergeFunction: Dissolve/Merge

• When you want to When you want to dissolve boundaries dissolve boundaries between similar between similar objects, you can use objects, you can use the Dissolve function.the Dissolve function.

• To join features from To join features from multiple inputs into a multiple inputs into a single output use single output use Merge.Merge.


Function: BufferFunction: Buffer

• When you want to look at the distance away from an When you want to look at the distance away from an object, you can create spatial buffers.object, you can create spatial buffers.


Function: Intersect & UnionFunction: Intersect & Union

• When you need to combine When you need to combine different layers or features, different layers or features, you can use:you can use:– Intersect: to find what is Intersect: to find what is

common to both inputs;common to both inputs;

– Union: to find what is in both Union: to find what is in both inputs.inputs.


Function: ClipFunction: Clip

• When you need to clip, or cookie-cut one layer with When you need to clip, or cookie-cut one layer with another layer, you can use Clip. another layer, you can use Clip.

• You can also do the opposite, with Erase.You can also do the opposite, with Erase.


Geoprocessing ToolsGeoprocessing Tools


Power of MapsPower of Maps

• Maps gain their value in three Maps gain their value in three ways: ways:

– As a way of recording and As a way of recording and storing information storing information

– As a means of analyzing As a means of analyzing locational distributions and locational distributions and spatial patterns spatial patterns

– As a method of presenting As a method of presenting information and information and communicating findings communicating findings

http://quake.usgs.gov/prepare/alameda.htmlhttp://quake.usgs.gov/prepare/alameda.html


TitleLegen

d

Projection

Grid

Data Source

Inset map

Map Body

Author

North Arrow

Scale

Layout: Map ElementsLayout: Map Elements


Next WeeksNext Weeks

• Next week: Next week: – Creating spatial dataCreating spatial data– GPS and geocodingGPS and geocoding


Your Workspace

Logging on• User: !workshopuser• Password: WRKshop USR!

Working Folder:• Create a folder that all of your work will be stored in• C:\Workspace\YOURNAME• Copy the data into this folder

Data• Z:\ESPM9

gis & health espm 9: w 5-8 april 7, 2010 instructors: maggi kelly kevin koy mark o’connor...

Documents

gis slide

gis health espm

health spring

gis software

data query slide

vector data slide

data geoprocessing slide

raster slide