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.
Open the Cities.jmp sample data table.
2.
Select Graph > Chart.
3.
Select OZONE and click Statistics.
4.
Select Mean.
5.
Select city and click Categories, X, Levels.
6.
Ozone Levels in a Bar Chart
1.
Return to the Cities.jmp sample data table.
2.
Select Graph > Treemap.
3.
Select POP (population) and click Sizes.
4.
Select city and click Categories.
5.
Select OZONE and click Coloring.
6.
Ozone Levels in a Treemap