1.

Open the Cities.jmp sample data table.

2.

Select Graph > Contour Plot.

3.

4.

5.

Select to Fill Areas.

6.

Click OK.

Note: By default, the contour plot uses Delaunay triangulation for generating the contour plot. From the Contour Plot red triangle menu, select Transform > Range Normalized to change the method for calculating the triangulations to a normalized scale ([0,1]) in both X and Y.
7.

From the Contour Plot red triangle menu, select Show Control Panel.

The Alpha slider appears.
8.

From the Contour Plot red triangle menu, select Save > Save Triangulation.

10.

Click and move the Alpha slider to the right to filter out the larger Delaunay triangulation circles.
