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d.vect.chart(1)		    GRASS GIS User's Manual	       d.vect.chart(1)

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

KEYWORDS
       display,	cartography, chart maps

SYNOPSIS
       d.vect.chart
       d.vect.chart --help
       d.vect.chart	 [-cl3]	     map=name	    [type=string[,string,...]]
       [layer=string]	     [chart_type=string]       columns=name[,name,...]
       [size_column=name]	[size=integer]	     [scale=float]	 [out-
       line_color=name]				      [colors=name[,name,...]]
       [max_ref=float[,float,...]]   [--help]  [--verbose]  [--quiet]  [--ui]

   Flags:
       -c
	   Center the bar chart	around a data point

       -l
	   Create legend information and send to stdout

       -3
	   Create 3D charts

       --help
	   Print usage summary

       --verbose
	   Verbose module output

       --quiet
	   Quiet module	output

       --ui
	   Force launching GUI dialog

   Parameters:
       map=nameA [required]
	   Name	of vector map
	   Or data source for direct OGR access

       type=string[,string,...]
	   Input feature type
	   Options: point, line, boundary, centroid, area
	   Default: point,line,boundary,centroid

       layer=string
	   Layer number	or name
	   Vector features can have category values in different layers.  This
	   number determines which layer to use. When used with	direct OGR ac-
	   cess	this is	the layer name.
	   Default: 1

       chart_type=string
	   Chart type
	   Options: pie, bar
	   Default: pie

       columns=name[,name,...]A	[required]
	   Attribute columns containing	data

       size_column=name
	   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

       outline_color=name
	   Outline color
	   Either a standard color name	or R:G:B triplet
	   Default: black

       colors=name[,name,...]
	   Colors used to fill charts
	   Either a standard color name	or R:G:B triplet
	   Default: black

       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:

	   o   vector points: on point position,

	   o   vector lines: on	line centers,

	   o   vector areas: on	area centroids.
       Bar charts are placed with their	lower edge starting from the y-coordi-
       nate 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 parame-
       ter columns. These values are used to  create  a	 framed	 bar  plot  if
       chart_type is bar (See Example 2).

EXAMPLES
   Example 1
       Pie-charts  of  monthly	winter	precipitation  (North  Carolina	sample
       dataset):
       g.region	vector=nc_state	-p
       d.vect nc_state
       d.vect.chart precip_30ynormals chart_type=pie columns=nov,dec,jan,feb -l
       # show pie chart	as 3D
       d.erase
       d.vect nc_state
       d.vect.chart precip_30ynormals chart_type=pie columns=nov,dec,jan,feb -l	-3
       2D pie-chart of monthly winter precipitation in North Carolina

       3D pie-chart of monthly winter precipitation in North Carolina

   Example 2
       Bar-chart of different census map values:
       d.vect.chart map=vectmap	columns=cens51,cens61,cens71,cens81 chart_type=bar

   Example 3
       Creation	of framed bar charts of	an erodibiliy index from the Spearfish
       sample dataset:
       g.region	raster=erode.index -p
       r.to.vect -s input=erode.index output=erode_index type=area
       v.extract input=erode_index output=erode_index_ctrds type=centroid
       d.rast aspect
       d.vect.chart map=erode_index_ctrds chart_type=bar columns=cat \
		    size=10 max_ref=12 scale=0.05 colors=yellow
       d.vect erode_index_ctrds	icon=basic/circle fcol=black col=black size=5
       Bar charts of an	erodibiliy index (spatial subset)

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

AUTHOR
       Radim Blazek, ITC-Irst, Trento, Italy

SOURCE CODE
       Available at: d.vect.chart source code (history)

       Main  index | Display index | Topics index | Keywords index | Graphical
       index | Full index

       A(C) 2003-2020 GRASS Development	Team, GRASS GIS	7.8.4 Reference	Manual

GRASS 7.8.4						       d.vect.chart(1)

NAME | KEYWORDS | SYNOPSIS | DESCRIPTION | NOTES | EXAMPLES | SEE ALSO | AUTHOR | SOURCE CODE

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