Create a Category Set from Existing Values

How To... > Work with Collections > Control Behavior of Categorical Attributes Using Category Sets > Create a Category Set from Existing Values

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If you have an attribute that’s already populated with values and you want to generate a category set from them, you can do this in the collection inspector’s Cases panel.

1.	In the Cases panel of the collection inspector, click Show Details.

A new pane appears below the attributes.

2.	Select an attribute.

3.	From the Set pop-up menu, choose Generate From Values.

A new category set is generated, using the values of the selected attribute; you can edit it in the Categories panel. This works for numeric data as well and is the easiest way to get Fathom to treat a numeric attribute as categorical.

If you don’t like the order in which the categories appear in graphs and summary tables, you can Reorder Categories in a Category Set by dragging categories in a bar chart, or by editing the category set in the Categories panel of the inspector.