d.vect.chart(1)

1d.vect.chart(1)               Grass User's Manual              d.vect.chart(1)
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NAME

6       d.vect.chart   -  Displays  charts  of  GRASS vector data in the active
7       frame on the graphics monitor
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KEYWORDS

10       display
11

SYNOPSIS

13       d.vect.chart
14       d.vect.chart help
15       d.vect.chart [-cl] map=name  [type=string[,string,...]]    [layer=inte‐
16       ger]    [ctype=string]   columns=string[,string,...]   [sizecol=string]
17       [size=integer]        [scale=float]        [ocolor=string]        [col‐
18       ors=string[,string,...]]     [max_ref=float[,float,...]]    [--verbose]
19       [--quiet]
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21   Flags:
22       -c
23           Center the bar chart around a data point
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25       -l
26           Create legend information and send to stdout
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28       --verbose
29           Verbose module output
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31       --quiet
32           Quiet module output
33
34   Parameters:
35       map=name
36           Name of input vector map
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38       type=string[,string,...]
39           Type
40           Feature type(s)
41           Options: point,line,boundary,centroid,area
42           Default: point,line,boundary,centroid
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44       layer=integer
45           Layer number
46           A single vector map can be connected to multiple  database  tables.
47           This number determines which table to use.
48           Default: 1
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50       ctype=string
51           Chart type
52           Options: pie,bar
53           Default: pie
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55       columns=string[,string,...]
56           Attribute columns containing data
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58       sizecol=string
59           Column used for pie chart size
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61       size=integer
62           Size of chart (diameter for pie, total width for bar)
63           Default: 40
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65       scale=float
66           Scale for size (to get size in pixels)
67           Default: 1
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69       ocolor=string
70           Outline color
71           Default: black
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73       colors=string[,string,...]
74           Colors used to fill charts
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76       max_ref=float[,float,...]
77           Maximum value used for bar plot reference
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DESCRIPTION

80       d.vect.chart  displays charts for GRASS vector data in the active frame
81       on the graphics monitor.
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NOTES

84       The charts are positioned as follows:
85
86                      vector points: on point position
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88                      vector lines: on line centers
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90                      vector areas: on area centroids
91       Bar charts are placed with their lower edge starting from the y-coordi‐
92       nate  of the feature being symbolized, and centered with respect to the
93       x-coordinate. The -c flag can be used to center the bar chart in both x
94       and y directions.
95       The 'sizecol' parameter is proportionate to the radius.
96       The  optional max_ref parameter accepts a list of values that represent
97       the maximum value for each column listed in the values for the  parame‐
98       ter columns. These values are used to create a framed bar plot if ctype
99       is bar (See Example 2).
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EXAMPLES

102   Example 1
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104       d.vect.chart map=vectmap columns=cens51,cens61,cens71,cens81
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107   Example 2
108       Create framed bar graphs of an  erodibiliy  index  from  the  SPEARFISH
109       dataset.
110       r.to.vect -s -v in=erode.index out=erode_index feature=area
111       v.extract in=erode_index out=erode_index_ctrds type=centroid
112       d.rast aspect
113       d.vect.chart map=erode_index_ctrds ctype=bar columns=cat \
114                    size=10 max_ref=12 scale=1.5 colors=yellow
115       d.vect erode_index_ctrds icon=basic/circle fcol=black col=black size=5
116        Example screenshot (zoomed):
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AUTHOR

122       Radim Blazek, ITC-Irst, Trento, Italy
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124       Last changed: $Date: 2007-06-02 22:46:58 +0200 (Sat, 02 Jun 2007) $
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126       Full index
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128       © 2003-2008 GRASS Development Team
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132GRASS 6.3.0                                                    d.vect.chart(1)