ShowZones property

Use the ShowZones property to have the chart color coded into three zones corresponding to the number of standard deviations from the center line.

• The inner zone between +1 and –1 standard deviation shows in green and is enabled whenever a rule is enabled that uses the 1 standard deviation limit.

• The second zone is between +1 and +2 standard deviations and between –1 and –2 standard deviations and shows in yellow. It is enabled when there is a rule enabled that uses the 2 standard deviation limit (often referred to as the warning limit).

• The final outer zone is between +2 and +3 standard deviations and between –2 and –3 standard deviations and shows in red. This zone is enabled when the out-of-control rule is enabled.

  

If one or more of the zones are not enabled, the next level zone will fill in the missing zone's area. For example, if the out-of-control limit rule is the only rule applied to a chart and ShowZones is enabled, the entire area between the control limits will be colored red.

This is a design-time and a run-time property. However, changing the value will not update the chart until the next time the chart is refreshed or the DisplayChart() method is called.

You cannot set this property to Null.