Direction Visualizing Multiple Physician Offices Wansoo Im, Ph.D. GIS in Health and Planning Rutgers University

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Wansoo Im, Ph.D.
GIS in Planning and Health
Rutgers University
Spring, 2012

2. DOWNLOAD DATA
Go to sakai
Download Physician data
Download NJ county and municipal boundary shapefile
Njgin.state.nj.us
=> Don’t forget to extract all these data to bring them into Arc GIS

3. ADD THE DATA

4. ADD MUNICIPAL LAYER AT FIRST
So that you can get the right projection in feet
(Arc GIS only recognize the first projection of which the layer is added
at first.

5. CLICK “IDENTIFY” ICON TO SEE THE
INFORMATION OF THE POINTS
If you click one point to identify, you can see there’re many points
overlaying at one point location.

6. THERE ARE SAME LOCATIONS THAT OVERLAY.
HOW DO WE CALCULATE THE NUMBER OF
DOCTORS LOCATED IN THE SAME LOCATION?

7. EXPORT ALL DATA FROM ATTRIBUTE TABLE
Don’t select any case before you export the table data.
If you select, then you will export only selected case as a table data.

8. CLICK MENU-> EXPORT THE TABLE

9. WHY DO WE EXPORT THIS TABLE DATA, NOT
USING EXISTING DBF FILE THAT ALREADY
EXISTS IN SHAPEFILE?
It’s because, if we use dbf. File which already exist within shapefile,
then you will affect the original data. So, we export this table data
(Think that you are copying it) to adjust /calculate in excel.

10. SAVE TABLE AS DBF. TABLE FORMAT

11. EXPORT DATA IN DBF FILE FORMAT

12. OPEN DBF. FILE FORMAT TABLE IN EXCEL

13. TYPE THE EQUATION TO JOIN X Y DATA AS A
TEXT FORMAT
= C2&”_”&D2
Combine X and Y value
Not as a value but as a text, that’s why We put under bar so that we
can separate this X_Y data into X and Y.
After counting the number of doctors.

16. DRAG UNTIL THE END OF ROWS TO COPY THE
FORMAT

17. PIVOT TABLE

18. SELECT THE AREA

19. INSERT->PIVOT TABLE
Make sure you create “new worksheet” to work on pivot table

20. DRAG X_Y VARAIBLE INTO “ROW LAVELS” AND
“X_Y VARIABLE” INTO “VALUES”

21. COPY THE PIVOT TABLE AND PASTE INTO NEW
BLANK WORKSHEET (PASTE VALUE) SO THAT
WE CAN ERASE PIVOT TABLE FORMAT

22. PASTE THE “VALUE”

23. CLEAN THE DATA
Delete the empty rows and grand total

24. SEPARATE THE DATA BY “TEXT TO COLUMN”
Select the row to separate
Go to text to column
Delimited -> Next

25. SEPARATE X_Y VAIRALBE INTO X AND Y
VARIABLES
Check the box “Other” and type “_(underbar)” => Next

26. CLEANING THE DATA
Warning!
“Count of X_Y” should be changed to “Count” or something shorter
than this name without space so that Arc GIS doesn’t get irritated to
recognize this data.

27. SAVE AS WORKBOOK 1997-2002

28. ADD XY DATA

29. X FIELD => LONGITUDE
YFIELD => LATITUDE

30. CLICK “EDIT” TO SET THE PROJECTION

31. SET THE PROJECTION
Geographical coordinate system -> North America-> NAD1983

32. CHECK THE ATTRIBUTE TABLE

33. CHANGE THE SYMBOLOGY

34. CLICK “CLASSIFY” TO EDIT THE CLASS

35. NEXT WEEK : MAPPLER EXAMPLE 1 – RU SAFE
www.mappler.net/rusafe

36. NEXT WEEK : EXAMPLE 2 – RU BIKE
www.rubike.org