Histogram of a segment map
A histogram is a special object which lists frequency information on values, classes or IDs in a map. A segment histogram lists the number of segments and their total length per class, ID or value in the map. If the input segment map uses a value domain, also the cumulative number of segments and cumulative lengths are calculated.
In a histogram window, the histogram is presented as a table and as a graph.
A segment histogram is obtained by performing the Histogram operation on a segment map. For segment maps that use a value domain and of which no histogram is available yet, a histogram is automatically calculated just before such a value map is displayed.
With the Histogram operation, you can also calculate histograms of raster, polygon and point maps.