For example, using the Cities.jmp sample data table, specify an Ordering variable as follows:
1.
Select Help > Sample Data Library and open Cities.jmp.
2.
Select Graph > Treemap.
3.
Select city and click Categories.
4.
Select POP (population) and click Ordering.
5.
The report window appears. Since you specified an Ordering variable, the cities in the treemap are ordered from bottom left (small cities) to upper right (big cities).
POP as Ordering Variable

Help created on 9/19/2017