The raster histogram is nothing

Discussion created by sailitang on Sep 20, 2012
Latest reply on Sep 20, 2012 by sailitang

   I have code about doing statistics for my raster data. I use ComputeStatsAndHist() to do statistics and should have been able to get raster histogram and the histogram's counts. But the histogram always nothing when I run the code, so the code dblCounts = pRasterHist.Counts always sends error message. Could you tell me if it is possible and normal that raster histogram is nothing or my code has some problem? Thank you so much.

Dim pColRBands As IRasterBandCollection
            pColRBands = pRaster

            Dim pRasterBand As IRasterBand
            pRasterBand = pColRBands.Item(0)

            Dim pRasterHist As IRasterHistogram
            pRasterHist = pRasterBand.Histogram


            Dim dblCounts() As Double
            dblCounts = pRasterHist.Counts