Treemaps can be useful in cases where histograms or bar charts are ineffective. This example uses the Cities.jmp sample data table, which contains meteorological and demographic statistics for 52 cities. Compare the bar chart to the treemap.
1.
Select Help > Sample Data Library and open Cities.jmp.
2.
Select Graph > Legacy > Chart.
3.
Select OZONE and click Statistics.
4.
Select Mean.
5.
Select city and click Categories, X, Levels.
6.
Figure 10.2 Ozone Levels in a Bar Chart
1.
Return to the Cities.jmp sample data table.
2.
Select Graph > Legacy > Treemap.
3.
Select POP (population) and click Sizes.
4.
Select city and click Categories.
5.
Select OZONE and click Coloring.
6.
Figure 10.3 Ozone Levels in a Treemap
Tip: A photo can be displayed in the label when you place your cursor over a square. For example, in the Cities.jmp sample data table, you could add an Expression column that contains a photo of each city and add a label to the column. See Expression Role in the Using JMP book for details.

Help created on 7/12/2018