Histogram
A histogram is a special object which lists frequency information on values, classes or IDs in a raster, polygon, segment or point map. A histogram is automatically calculated when displaying a value map with stretching; you can also use the Histogram operation.
In a histogram window, the histogram is presented as a table and as a graph. Summary information of a histogram of a value raster map, such as mean, standard deviation, and percentage intervals, can be viewed both in the histogram window as well as Properties of the histogram.
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A raster histogram lists the number of pixels, the percentages and the areas per value, class or ID. If the input raster map uses a Value domain, also cumulative number of pixels and cumulative percentages are calculated. |
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A polygon histogram lists the number of polygons and the perimeter and area of polygons per class, ID, or value. If the input polygon map uses a Value domain, also the cumulative number of polygons, cumulative perimeters and cumulative areas are calculated. |
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A segment histogram lists the number of segments and their length per class, ID or value. If the input segment map uses a Value domain, also the cumulative number of segments and cumulative lengths are calculated. |
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A point histogram lists the number of points per class, ID or value. If the input point map uses a Value domain, also the cumulative number of points are calculated. |
