d.vect.chart(1)

1d.vect.chart(1)               Grass User's Manual              d.vect.chart(1)
2
3
4

NAME

6       d.vect.chart   -  Displays  charts  of  GRASS vector data in the active
7       frame on the graphics monitor
8

KEYWORDS

10       display
11

SYNOPSIS

13       d.vect.chart
14       d.vect.chart help
15       d.vect.chart [-c] 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,...]]
19
20   Flags:
21       -c  Center the bar chart around a data point
22
23   Parameters:
24       map=name
25           Name of input vector map
26
27       type=string[,string,...]
28           Type     Options:     point,line,boundary,centroid,area    Default:
29           point,line,boundary,centroid
30
31       layer=integer
32           Layer number Default: 1
33
34       ctype=string
35           Chart type Options: pie,bar Default: pie
36
37       columns=string[,string,...]
38           Attribute columns containing data
39
40       sizecol=string
41           Column used for pie chart size
42
43       size=integer
44           Size of chart (diameter for pie, total width for bar) Default: 40
45
46       scale=float
47           Scale for size (to get size in pixels) Default: 1
48
49       ocolor=string
50           Outline color Default: black
51
52       colors=string[,string,...]
53           Colors used to fill charts
54
55       max_ref=float[,float,...]
56           Maximum value used for bar plot reference
57

DESCRIPTION

59       d.vect.chart displays charts for GRASS vector data in the active  frame
60       on the graphics monitor.
61

NOTES

63       The charts are positioned as follows:
64
65                      vector points: on point position
66
67                      vector lines: on line centers
68
69                      vector areas: on area centroids
70       Bar charts are placed with their lower edge starting from the y-coordi‐
71       nate of the feature being symbolized, and centered with respect to  the
72       x-coordinate. The -c flag can be used to center the bar chart in both x
73       and y directions.
74       The 'sizecol' parameter is proportionate to the radius.
75       The optional max_ref parameter accepts a list of values that  represent
76       the  maximum value for each column listed in the values for the parame‐
77       ter columns. These values are used to create a framed bar plot if ctype
78       is bar (See Example 2).
79

EXAMPLES

81   Example 1
82
83       d.vect.chart map=vectmap columns=cens51,cens61,cens71,cens81
84
85
86   Example 2
87       Create  framed  bar  graphs  of  an erodibiliy index from the SPEARFISH
88       dataset.
89       r.to.vect -s -v in=erode.index out=erode_index feature=area
90       v.extract in=erode_index out=erode_index_ctrds type=centroid
91       d.rast aspect
92       d.vect.chart map=erode_index_ctrds ctype=bar columns=cat \
93                    size=10 max_ref=12 scale=1.5 colors=yellow
94       d.vect erode_index_ctrds icon=basic/circle fcol=black col=black size=5
95        Example screenshot (zoomed):
96

AUTHOR

101       Radim Blazek, ITC-Irst, Trento, Italy
102
103       Last changed: $Date: 2007/06/02 20:47:26 $
104
105       Full index
106
107
108
109GRASS 6.2.2                                                    d.vect.chart(1)