

d.histogram - 

d.histogram plots the \category value\ distribution for a
user-specified \raster\ map layer in the form of a bar chart or a pie
chart.  The plot will be displayed in the active display \frame\ on the
graphics monitor, using the colors in the raster map layer's color
table.  The program determines the raster file's category value
distribtution by counting \cells\.

Manual entry for \d.histogram\
