SPATIAL ANALYSIS I:HOSPITAL MARKET STUDY

GIS IN HEALTH AND PLANNING2012 SPRINGRUTGERS UNIVERSITYBY WANSOO IM, PH.D.2/1

5/2012

CENSUS TRACT SHAPE FILE DOWNLOAD

http://www.nj.gov/dep/gis/

MENU -> DOWNLOAD

HOSPITAL DATA DOWNLOAD

njgin.state.nj.us (data downloads)

DON’T FORGET TO EXTRACT FILES(WHEN YOU ADD A DATA IN ARC GIS)

OPEN ATTRIBUTE TABLE

ADD A NEW FIELD FOR NEW HISPANIC DATA(FOR PERCENTAGE)

RIGHT CLICK ON POP 2002 -> SORT ASCENDING -> SELECT ALL “0” BY DRAGGING ROWS

SWITCH SELECTION (SEARCH IN THE MENU)

SELECT THE NEWLY CREATED FIELD(HISP) AND RIGHT CLICK -> FIELD CALCULATOR

FIELD CALCULATION

Hispanic(original one, not the one you newly created)/population2000 *100

CREATE NEW SHAPEFILE FOR SELECTED FEATURE : DATA ->EXPORT DATA -> SELECTED FEATURES

TOOLBOX->ANALYSIS TOOL->PROXIMITY->BUFFER

GEOPROCESSING -> CLIPInput layer : Census tract

Clip feature : Buffer from hospital ( just like cookie cutter)(

CLIP

CLIPPED SHAPEFILE -> GRADUATE COLOR-> SET A FIELD FOR “HISP(HISPANIC POPULATION %)”

SELECTION -> SELECT BY ATTRIBUTES -> CLICK THE LAYER -> SELECT ATTRIBUATE TO CALCULATE -> GET UNIQUE VALUES-> CALCULATE BY USING <, >, /, *..

EXPORT SELECTED FEATURES

Once Features are selected, the boundary color of features changes with ‘blue’ color

* How to export “selected features”?

Once you select features from a layer, You can right-click the layer (including selected features)->data->export data-

Notice : Make sure that you connect to the right folder directory where you want to save ; click the folder icon under the output feature class