It loads a volume using VolumeViz and dynamically computes the histogram of the region defined by the ROI. Histogram result is displayed using a bar chart in a PoSceneView.
SoVolumeHistogram, SoTransferFunction, SoDataRange, SoLDMDataAccess, SoVolumeSkin, SoROI, SoROIManip, PoDomain, PoSceneView