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d.histogram - Displays a histogram in the form of a pie or bar chart for a user-specified
raster map.


display, histogram, statistics


d.histogram --help
d.histogram [-nc] map=name [style=string] [color=name] [bgcolor=name]
[nsteps=integer] [--help] [--verbose] [--quiet] [--ui]

Display information for null cells

Report for ranges defined in cats file (fp maps only)

Print usage summary

Verbose module output

Quiet module output

Force launching GUI dialog

map=name [required]
Raster map for which histogram will be displayed

Indicate if a pie or bar chart is desired
Options: pie, bar
Default: bar

Color for text and axes
Either a standard color name or R:G:B triplet
Default: black

Background color
Either a standard color name, R:G:B triplet, or "none"
Default: white

Number of steps to divide the data range into (fp maps only)
Default: 255


d.histogram displays the category-value distribution for a user-specified raster map
layer, in the form of a bar chart or a pie chart. The display 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 map’s category value distribution by
counting cells.


d.histogram respects the current geographic region settings and the current MASK (if one

d.histogram uses the colors in the map’s color look-up table (i.e., the map’s colr or
colr2 file).

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