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 file.
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KEYWORDS

10       display
11

SYNOPSIS

13       d.histogram
14       d.histogram help
15       d.histogram   [-nqC]   map=string    [color=string]      [style=string]
16       [nsteps=integer]
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18   Flags:
19       -n  Display information for null cells
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21       -q  Gather the histogram quietly
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23       -C  Report for ranges defined in cats file (fp maps only)
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25   Parameters:
26       map=string
27           Raster map for which histogram will be displayed
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29       color=string
30           Color    for    legend    and    title   Options:   red,orange,yel‐
31           low,green,blue,indigo,vio‐
32           let,white,black,gray,brown,magenta,aqua,grey,cyan,purple   Default:
33           black
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35       style=string
36           Indicate if a pie or bar chart is desired Default: bar
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38       nsteps=integer
39           Number of steps to divide  the  data  range  into  (fp  maps  only)
40           Default: 255
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DESCRIPTION

43       d.histogram  displays the category-value distribution for a user-speci‐
44       fied raster map layer, in the form of a bar chart or a pie chart.   The
45       display  will  be displayed in the active display frame on the graphics
46       monitor, using the colors in the raster map layer's color  table.   The
47       program  determines  the  raster  file's category value distribution by
48       counting cells.
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NOTES

51       d.histogram uses the current geographic region settings and the current
52       mask (if one exists).
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54       d.histogram uses the colors in the map's color look-up table (i.e., the
55       map's colr or colr2 file).
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57       d.histogram does not erase the active frame before displaying output.
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SEE ALSO

60       d.colors, d.colortable, d.erase, d.polar, g.region, r.stats, parser,
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AUTHOR

63       Dave Johnson
64        DBA Systems, Inc.
65        10560 Arrowhead Drive
66        Fairfax, Virginia 22030
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68       Last changed: $Date: 2006/04/13 18:50:10 $
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70       Full index
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74GRASS 6.2.2                                                     d.histogram(1)
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