1d.histogram(1)                Grass User's Manual               d.histogram(1)
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NAME

6       d.histogram   -  Displays a histogram in the form of a pie or bar chart
7       for a user-specified raster map.
8

KEYWORDS

10       display
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SYNOPSIS

13       d.histogram
14       d.histogram help
15       d.histogram    [-nqC]    map=name     [style=string]       [color=name]
16       [bgcolor=name]   [nsteps=integer]   [--verbose]  [--quiet]
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18   Flags:
19       -n
20           Display information for null cells
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22       -q
23           Gather the histogram quietly
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25       -C
26           Report for ranges defined in cats file (fp maps only)
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28       --verbose
29           Verbose module output
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31       --quiet
32           Quiet module output
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34   Parameters:
35       map=name
36           Raster map for which histogram will be displayed
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38       style=string
39           Indicate if a pie or bar chart is desired
40           Options: pie,bar
41           Default: bar
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43       color=name
44           Color for text and axes
45           Either a standard color name or R:G:B triplet
46           Default: black
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48       bgcolor=name
49           Background color
50           Either a standard GRASS color, R:G:B triplet, or "none"
51           Default: white
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53       nsteps=integer
54           Number of steps to divide the data range into (fp maps only)
55           Default: 255
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DESCRIPTION

58       d.histogram  displays the category-value distribution for a user-speci‐
59       fied raster map layer, in the form of a bar chart or a pie chart.   The
60       display  will  be displayed in the active display frame on the graphics
61       monitor, using the colors in the raster map layer's color  table.   The
62       program  determines  the  raster  map's  category value distribution by
63       counting cells.
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NOTES

66       d.histogram respects the current geographic  region  settings  and  the
67       current MASK (if one exists).
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69       d.histogram uses the colors in the map's color look-up table (i.e., the
70       map's colr or colr2 file).
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SEE ALSO

73         d.colors,  d.colortable,  d.frame,  d.graph,  d.linegraph,   d.polar,
74       g.region, r.stats
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AUTHOR

77       Dave Johnson
78        DBA Systems, Inc.
79        10560 Arrowhead Drive
80        Fairfax, Virginia 22030
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82       Last changed: $Date: 2007-05-17 10:13:14 +0200 (Thu, 17 May 2007) $
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84       Full index
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86       © 2003-2008 GRASS Development Team
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90GRASS 6.3.0                                                     d.histogram(1)
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