1d.vect.chart(1) Grass User's Manual d.vect.chart(1)
2
3
4
6 d.vect.chart - Displays charts of GRASS vector data in the active
7 frame on the graphics monitor
8
10 display
11
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]
20
21 Flags:
22 -c
23 Center the bar chart around a data point
24
25 -l
26 Create legend information and send to stdout
27
28 --verbose
29 Verbose module output
30
31 --quiet
32 Quiet module output
33
34 Parameters:
35 map=name
36 Name of input vector map
37
38 type=string[,string,...]
39 Type
40 Feature type(s)
41 Options: point,line,boundary,centroid,area
42 Default: point,line,boundary,centroid
43
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
49
50 ctype=string
51 Chart type
52 Options: pie,bar
53 Default: pie
54
55 columns=string[,string,...]
56 Attribute columns containing data
57
58 sizecol=string
59 Column used for pie chart size
60
61 size=integer
62 Size of chart (diameter for pie, total width for bar)
63 Default: 40
64
65 scale=float
66 Scale for size (to get size in pixels)
67 Default: 1
68
69 ocolor=string
70 Outline color
71 Default: black
72
73 colors=string[,string,...]
74 Colors used to fill charts
75
76 max_ref=float[,float,...]
77 Maximum value used for bar plot reference
78
80 d.vect.chart displays charts for GRASS vector data in the active frame
81 on the graphics monitor.
82
84 The charts are positioned as follows:
85
86 vector points: on point position
87
88 vector lines: on line centers
89
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).
100
102 Example 1
103
104 d.vect.chart map=vectmap columns=cens51,cens61,cens71,cens81
105
106
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):
117
119 d.erase, d.vect, d.vect.thematic, d.what.vect, d.rast
120
122 Radim Blazek, ITC-Irst, Trento, Italy
123
124 Last changed: $Date: 2007-06-02 22:46:58 +0200 (Sat, 02 Jun 2007) $
125
126 Full index
127
128 © 2003-2008 GRASS Development Team
129
130
131
132GRASS 6.3.0 d.vect.chart(1)