gethistogram(3G)

NAME
     gethgram -  gets histogram data computed by hgram

C SPECIFICATION
     void gethgram(unsigned long *hist)

PARAMETERS
     hist   is the destination for the histogram data specified with hgram.
            Hist must be at least (number of bins per component) x (number of
            components per pixel) long.

DESCRIPTION
     gethgram returns the histogram from the graphics system to the CPU
     memory. The ordering of the components for each FORMAT are RGBA for 4
     component pixels, RGB for three component pixels, LA for two component
     pixels, L for one component pixels.

SEE ALSO
     hgram minmax getminmax pixeltransfer pixelmap pixmode

NOTES
     gethgram only works on RealityEngine systems running 5.0.1 or greater.