Basic Analysis and Graphing - SAS

Chapter 16 Creating Maps 409
Example of Creating A Map in Graph Builder
Figure 16.5 Example of US-State-Name.jmp
Map XY Files
Each xxx-XY.jmp file has four columns. Each row is a coordinate in some shape. Each shape is made of one
or more parts. Each part is a closed polygon. The first column is the same Shape ID as in the xxx-Name file.
The second column is the Part ID. The next two columns are X and Y.
Figure 16.6 Example of US-State-XY.jmp
Color
You can add color to geographic regions on a map to show statistical differences across geography. This type
of map is called a choropleth map. Choropleth maps shade or give patterns to areas in proportion to the
measurement of the statistical variable being displayed on the map. Such maps let you visualize differences
across a geographic area. The Graph Builder platform lets you quickly create this type of map.
Drag a column containing geographic place-names, like countries, regions, states, or provinces, into the
Map Shape zone and create a map. Then drag a column to the Color zone to color the map by that
column. The categorical or continuous color theme selected in your Preferences is applied to each shape.