When you add a Catalog dimension to the data layout of a Chart, the rendered Chart contains all bars and labels corresponding to the total number of unique items in the dimension. If the number of items added is large and as a result, all items cannot display in one view, you can scroll the entire contents of a chart either vertically or horizontally using the scrollbars. The horizontal scrollbar controls the scrolling of X Axis items, and the vertical scrollbar controls the scrolling of Stack, Cluster and Depth items.
Optionally, you or an administrator can define a specific number of items to show for each view of the chart. If the number of total bars is greater than the view size, a full page of bars displays. For example, assume each bar has three views and you want to display four bars (such as: A-B-C-D). When you first display the chart only bars A-B-C display, then when you scroll to the right bars B-C-D display.
If not all bars of a chart display in one view, the you can display the text “Partial View” as an indicator in the top left corner of the Contents pane. You can show or hide this indicator on a per chart basis by enabling or disabling the “Show partial view indicator” field on the General tab of Chart Properties.