d.histogram1grass
Displays a histogram in the form of a pie or bar chart for a user-specified raster map.
Usage
d.histogram
d.histogram --help
d.histogram [-nc]
map=name
[style=string]
[color=name]
[bgcolor=name]
[nsteps=integer]
[--help]
[--verbose]
[--quiet]
[--ui]
Keywords
display, histogram, statistics
Overview
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.
Notes
d.histogram respects the current geographic region settings and the current MASK (if one exists).
d.histogram uses the colors in the map’s color look-up table (i.e., the map’s colr or colr2 file).
Examples
Running the command below will generate the bar graph shown in the figure:
g.region raster=elevation -pd.mon wx0d.histogram map=elevation
Figure: Bar graph histogram for elevation map
Running the command below will generate the pie graph shown in the figure:
g.region raster=landuse96_28m -pd.histogram map=landuse96_28m style=pie
Figure: Pie graph histogram for landuse map
Source code
Available at: d.histogram source code (history)
Accessed: Monday Feb 24 17:50:24 2025
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Releases
10 releases since Debian 4.0 (Etch); the text changed 9 times.