if the input map uses a bool or a value domain and if this map contains undefined values, the percentages of the total number of pixels excluding pixels with the undefined value are calculated.if the input map is an image, the percentages of the total number of pixels excluding pixels with value zero are always calculated.For value maps (map which use a value, the image, the bit or a bool domain), also the cumulative number of pixels and cumulative percentages are calculated. You can use this operation to calculate histograms of raster maps stored with 4 or 8 bytes per pixel and to calculate histograms of polygon, segment or point maps.Ī raster histogram lists the number of pixels, the percentages, and the areas per value, class or ID. Thus, there is no need to perform the Histogram operation separately. Histograms of raster maps that are stored using 1 or 2 bytes per pixel are automatically calculated when needed. Summary information of a histogram of a raster map which uses a value or the Image domain, can be viewed in the properties of the histogram: mean, standard deviation, median, predominant, undefineds and percentage intervals. Results are presented in a histogram window, both as a table and as a graph. Histograms list frequency information on the values, classes, or IDs in your map.
The Histogram operation calculates the histogram of a raster, polygon, segment or point map.
Histogram : functionality Histogram Functionality
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