The Compute method is called automatically (on the parent IMcImage) whenever it is necessary. In order to compute the Histogram on another image than the parent, one has to call Compute explicitly.
When the intensity calibration is used (mchmApplyIntensityCalibration), the values are scaled and sorted according to the calibration.
When the mchmCenterBinValues Mode is selected, BinXValues are set to the intensity of their center point instead of the left one.
The property is exposed as a 1D array Variant (BinCount) representing all the values if Index=-1, or a single double precision floating point value when Index is positive or null.