Launch the Treemap Platform
Launch the Treemap platform by selecting Graph > Legacy > Treemap.
Figure A.1 The Treemap Launch Window
Sizes
Determines the size of the rectangles based on the values of the specified variable. See Sizes.
Categories
Specifies the category that comprises the treemap. See Categories.
Ordering
Changes the ordering from alphabetical (where values progress from the top left to the lower right) to order by the specified variable. You can specify more than one ordering variable. See Ordering.
Coloring
Colors the rectangles corresponding to the levels of the specified variable.
– If the variable is continuous, the colors are based on a continuous color spectrum.
– If the variable is categorical, the default colors are selected in order from JMP's color theme.
See Coloring.
By
Identifies a column that creates a report consisting of separate treemaps for each level of the variable.
Layout
Determines the layout of the rectangles. See Layout.
After you click OK, the Treemap window appears. See The Treemap Window.
Sizes
If you want the size of the rectangles to correspond to the levels of a variable, specify a Sizes variable. The rectangle size is proportional to the sum of the Sizes variable across all of the rows corresponding to a category. If you do not specify a Sizes variable, the rectangle size is proportional to the number of rows for each category.
Categories
The only required variable role for the Treemap platform is Categories. If you specify only a Categories variable and no other variables, the rectangles in the treemap have these attributes:
• They are colored from a rotating color theme.
• They are arranged alphabetically.
• They are sized by the number of occurrences in each group.
If you specify two Categories variables, the treemap is grouped by the first variable, and sorts within groups by the second variable. For example, using the Cities.jmp sample data table, specify Region and city (in that order) as the Categories variables.
Ordering
By default, the rectangles in a treemap appear in alphabetical order. Values progress from the top left to the lower right. To change this ordering, specify an Ordering variable. When an Ordering variable is specified, the rectangles appear with the values progressing from the bottom left to the upper right.
Note: If you use the Squarify option, the rectangles are ordered by size and the Ordering variable is ignored.
If you specify a single Ordering variable, the rectangles are clustered, with the high levels or large values together, and the low levels or small values together.
If you specify two Ordering variables, the treemap arranges the rectangles horizontally by the first ordering variable, and vertically by the second ordering variable. This approach can be useful for geographic data.
For example, suppose the Cities.jmp data is ordered by US state. If you order the data by latitude and or longitude, the Treemap rectangles are drawn ordered by the location of the US state.
Coloring
If you specify a Coloring variable, the colors of the rectangles correspond to the levels of the variable.
• If the variable is continuous, the colors are based on a continuous color theme setting. The default color theme is Blue to Gray to Red. The color of each value is based on the average value of all of the rows. Blue represents the lowest values, and red represents the highest values. The color is most intense at the extremes of the variable, and paler colors correspond to levels that are close to the mean. For example, see The Treemap Window.
• If the variable is categorical, the colors are based on a categorical color theme. The default color theme is JMP Default.
Note: If you have used the Value Colors column property to color a column, that property determines the colors of the categories.
• If you do not specify a Coloring variable, colors are chosen from a rotating color palette.