DESCRIPTION

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

NOTES

d.vect can simply be used typing d.vect map=vector_map. Optional a large variety of parameters allow to specify vector type, use of colors, data fields, SQL queries, label size and justification, etc.

Vector area fill colors can be specified in an attribute table column with name 'GRASSRGB'. With flag -a every area is filled depending on the category number. A table for a vector area map may look like this: 

  echo "select * from testisola" | db.select
  cat|label|GRASSRGB
  0|no data|
  90|FRASSILONGO|23:245:67
  104|LEVICO|23:145:67
  139|PERGINE VALSUGANA|223:45:237
  168|SANT'ORSOLA|223:45:67
  190|TENNA|123:45:67

To change a color, the SQL update function can be used: 

  echo "update testisola set GRASSRGB='123:45:237' where cat=139" | db.execute

Much simpler is color coding with -c flag which is using the category numbers to fill area polygons.

The module can use Freetype/TTF fonts which have to be selected first with d.font.freetype.

EXAMPLES

d.vect map=vectmap display=shape,cat lcolor=green
d.vect map=markveggy.vegtype where="VEGTYPE = 'IFA'"
d.vect -c map=soils display=shape,attr attrcol=label

SEE ALSO

d.erase, d.what.vect, d.rast, d.font.freetype
GRASS SQL interface
GRASS 5.7 tutorial pages

AUTHOR

Radim Blazek, ITC-Irst, Trento, Italy

Last changed: $Date$