Basic Analysis and Graphing - SAS

474 Creating Tree Maps Chapter 19
Additional Examples of the Tree Map Platform
• Cities with large populations are represented by large rectangles, such as New York and Los Angeles.
• Cities with smaller populations are represented by smaller rectangles, such as Cheyenne and Dubuque.
Some rectangles are too small to show their labels (for example, Cheyenne and Dubuque). Click on a small
rectangle to select the corresponding row in the data table, where you can see the label.
Example Using an Ordering Variable
For example, using the Cities.jmp sample data table, specify an Ordering variable as follows:
1. Open the Cities.jmp sample data table.
2. Select Graph > Tree Map.
3. Select city and click Categories.
4. Select POP (population) and click Ordering.
5. Click OK.
The report window appears. Since you specified an Ordering variable, the cities in the tree map are
ordered from bottom left (small cities) to upper right (big cities).
Figure 19.7 POP as Ordering Variable
large values
(big cities)
small values
(small cities)
Example Using Two Ordering Variables
For example, in the Cities.jmp sample data table, the X and Y columns correspond to the geographic
location of the cities. Specify the X and Y columns as Ordering variables:
1. Open the Cities.jmp sample data table.