An expression evaluating to an object of type McRegions.
FeatureIndex
Optional. A Long value.
An index value indicating for which feature the data is being accessed or set. If not given, then feature index zero is assumed.
value
A Variant value.
Remarks
The SourceData property is used by some measurements that expose a McFeatures to provide extended information about the source of each computed feature. If the stored Variant is of no interest to the user, this property may be used for storage of an arbitrary per-feature Variant value.
Note that the McDisplayedObjects.SetLabelText method is capable of displaying the SourceData property as a feature label (see Example 2).