1d.vect.chart(1) GRASS GIS User's Manual d.vect.chart(1)
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6 d.vect.chart - Displays charts of vector data in the active frame on
7 the graphics monitor.
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10 display, cartography, chart maps
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13 d.vect.chart
14 d.vect.chart --help
15 d.vect.chart [-cl3] map=name [type=string[,string,...]]
16 [layer=string] [chart_type=string] columns=name[,name,...]
17 [size_column=name] [size=integer] [scale=float] [out‐
18 line_color=name] [colors=name[,name,...]]
19 [max_ref=float[,float,...]] [--help] [--verbose] [--quiet] [--ui]
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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 -3
29 Create 3D charts
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31 --help
32 Print usage summary
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34 --verbose
35 Verbose module output
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37 --quiet
38 Quiet module output
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40 --ui
41 Force launching GUI dialog
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43 Parameters:
44 map=name [required]
45 Name of vector map
46 Or data source for direct OGR access
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48 type=string[,string,...]
49 Input feature type
50 Options: point, line, boundary, centroid, area
51 Default: point,line,boundary,centroid
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53 layer=string
54 Layer number or name
55 Vector features can have category values in different layers. This
56 number determines which layer to use. When used with direct OGR
57 access this is the layer name.
58 Default: 1
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60 chart_type=string
61 Chart type
62 Options: pie, bar
63 Default: pie
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65 columns=name[,name,...]Â [required]
66 Attribute columns containing data
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68 size_column=name
69 Column used for pie chart size
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71 size=integer
72 Size of chart (diameter for pie, total width for bar)
73 Default: 40
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75 scale=float
76 Scale for size (to get size in pixels)
77 Default: 1
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79 outline_color=name
80 Outline color
81 Either a standard color name or R:G:B triplet
82 Default: black
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84 colors=name[,name,...]
85 Colors used to fill charts
86 Either a standard color name or R:G:B triplet
87 Default: black
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89 max_ref=float[,float,...]
90 Maximum value used for bar plot reference
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93 d.vect.chart displays charts for GRASS vector data in the active frame
94 on the graphics monitor.
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97 The charts are positioned as follows:
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99 · vector points: on point position,
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101 · vector lines: on line centers,
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103 · vector areas: on area centroids.
104 Bar charts are placed with their lower edge starting from the y-coordi‐
105 nate of the feature being symbolized, and centered with respect to the
106 x-coordinate. The -c flag can be used to center the bar chart in both
107 x and y directions.
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109 The ’sizecol’ parameter is proportionate to the radius.
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111 The optional max_ref parameter accepts a list of values that represent
112 the maximum value for each column listed in the values for the parame‐
113 ter columns. These values are used to create a framed bar plot if
114 chart_type is bar (See Example 2).
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117 Example 1
118 Pie-charts of monthly winter precipitation (North Carolina sample
119 dataset):
120 g.region vector=nc_state -p
121 d.vect nc_state
122 d.vect.chart precip_30ynormals chart_type=pie columns=nov,dec,jan,feb -l
123 # show pie chart as 3D
124 d.erase
125 d.vect nc_state
126 d.vect.chart precip_30ynormals chart_type=pie columns=nov,dec,jan,feb -l -3
127 2D pie-chart of monthly winter precipitation in North Carolina
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129 3D pie-chart of monthly winter precipitation in North Carolina
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131 Example 2
132 Bar-chart of different census map values:
133 d.vect.chart map=vectmap columns=cens51,cens61,cens71,cens81 chart_type=bar
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135 Example 3
136 Creation of framed bar charts of an erodibiliy index from the Spearfish
137 sample dataset:
138 g.region raster=erode.index -p
139 r.to.vect -s input=erode.index output=erode_index type=area
140 v.extract input=erode_index output=erode_index_ctrds type=centroid
141 d.rast aspect
142 d.vect.chart map=erode_index_ctrds chart_type=bar columns=cat \
143 size=10 max_ref=12 scale=0.05 colors=yellow
144 d.vect erode_index_ctrds icon=basic/circle fcol=black col=black size=5
145 Bar charts of an erodibiliy index (spatial subset)
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148 d.erase, d.vect, d.vect.thematic, d.what.vect, d.rast
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151 Radim Blazek, ITC-Irst, Trento, Italy
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154 Available at: d.vect.chart source code (history)
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156 Main index | Display index | Topics index | Keywords index | Graphical
157 index | Full index
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159 © 2003-2020 GRASS Development Team, GRASS GIS 7.8.5 Reference Manual
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163GRASS 7.8.5 d.vect.chart(1)