A dimension is an axis of the crosstab, one of the fields which is crossed with another field to provide an analysis of the data.

You usually populate the dimensions of your crosstab by dragging a field from Data Tree and dropping it in the row area, column area, or main area of Table.

Alternatively, use Advanced—Dimensions to define rows and columns for a crosstab. Choose Calculate to update the table results.

Using a field as an axis on a crosstab automatically creates a measure for the count of the number of records with that discrete value. You can change the measures to something other than a simple count and set filters to limit the data included on the table.