### Histogram Object

The histogram object displays in bar graph format, the number of deviations within each of the different tolerance zones.

A Sample Histogram

When a dimension only has a single tolerance value, such as a form dimension, PC-DMIS displays the tolerance band as a range, and not in a fixed location. PC-DMIS will not display -TOL or +TOL in the resulting histogram but will instead show the heading "TOLERANCE ZONE" at the top and include a location for the mean value like this:

A Sample Histogram with a Single Tolerance

Inserting the Histogram Object

Use the Label Template Editor for a new or existing label template and then add and size the Histogram object so that it appears vertically or horizontally as desired in your label template editor's display area. Next, use the Rule Tree Editor dialog box for a new or existing report template to specify under what conditions (for what dimensions) PC-DMIS will call and display that label template. See the "About the Rule Tree Editor" topic in this section for information on how to do this.

Note: Histogram objects are not available for dimensions that are not directly calculated using the individual hits of their features, such as location, true position, and keyin dimensions.

Changing Histogram Colors

To see how these tolerance zones are defined or to change the colors representing each tolerance zone, see “Editing Dimension Colors” in the "Editing the CAD Display" section.