ShowSpecLimits property

Use the ShowSpecLimits property to specify whether or not to display the specification limits in the primary chart. The specification limit indications are displayed only if the ShowSpecLimits property is set to True. This is a design-time and a run-time property.

Specification limits apply to individual values and not the mean that is plotted for XBar charts. Showing the specification limits can cause the chart to auto‑scale so much that it is difficult to view the plotted points, especially with large sample sizes. This property can be used with the PlotPrimaryMeasurementValues property to see if any individual value is outside specification limits (which is not an SPC control rule violation/alarm indicator).

The following figure highlights the specification limit indications with the primary chart.

You cannot set this property to Null.