NAME¶

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

KEYWORDS¶

display, cartography

SYNOPSIS¶

d.vect.chart d.vect.chart help d.vect.chart [-cl] map=name [type=string[, string,...]] [layer=integer] [ ctype=string] columns=string[,string,...] [ sizecol=string] [size=integer] [scale=float] [ ocolor=string] [colors=string[, string,...]] [max_ref=float[, float,...]] [--verbose] [--quiet]

Flags:¶

-c

 

Center the bar chart around a data point

-l

 

Create legend information and send to stdout

--verbose

 

Verbose module output

--quiet

 

Quiet module output

Parameters:¶

map=name

 

Name of input vector map

type=string[,string,...]

 

Feature type

 

Options: point,line,boundary,centroid,area

 

Default: point,line,boundary,centroid

layer=integer

 

Layer number

 

A single vector map can be connected to multiple database tables. This number determines which table to use.

 

Default: 1

ctype=string

 

Chart type

 

Options: pie,bar

 

Default: pie

columns=string[,string,...]

 

Attribute columns containing data

sizecol=string

 

Column used for pie chart size

size=integer

 

Size of chart (diameter for pie, total width for bar)

 

Default: 40

scale=float

 

Scale for size (to get size in pixels)

 

Default: 1

ocolor=string

 

Outline color

 

Default: black

colors=string[,string,...]

 

Colors used to fill charts

max_ref=float[,float,...]

 

Maximum value used for bar plot reference

DESCRIPTION¶

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

NOTES¶

The charts are positioned as follows: Bar charts are placed with their lower edge starting from the y-coordinate of the feature being symbolized, and centered with respect to the x-coordinate. The -c flag can be used to center the bar chart in both x and y directions. The 'sizecol' parameter is proportionate to the radius. The optional max_ref parameter accepts a list of values that represent the maximum value for each column listed in the values for the parameter columns. These values are used to create a framed bar plot if ctype is bar (See Example 2).

EXAMPLES¶

Example 1¶

d.vect.chart map=vectmap columns=cens51,cens61,cens71,cens81

Example 2¶

Create framed bar graphs of an erodibiliy index from the SPEARFISH dataset. r.to.vect -s -v in=erode.index out=erode_index feature=area v.extract in=erode_index out=erode_index_ctrds type=centroid d.rast aspect d.vect.chart map=erode_index_ctrds ctype=bar columns=cat \
size=10 max_ref=12 scale=1.5 colors=yellow d.vect erode_index_ctrds icon=basic/circle fcol=black col=black size=5 Example screenshot (zoomed):

SEE ALSO¶

d.erase, d.vect, d.vect.thematic, d.what.vect, d.rast

AUTHOR¶

Radim Blazek, ITC-Irst, Trento, Italy Last changed: $Date: 2011-11-08 10:42:51 +0100 (Tue, 08 Nov 2011) $ Full index © 2003-2011 GRASS Development Team