v.select(1)

NAME
v.select - Select features from ainput by features from binput

KEYWORDS
vector

SYNOPSIS
v.select
v.select help
v.select [-t] ainput=name [atype=string[,string,...]] [alayer=integer] binput=name [btype=string[,string,...]] [blayer=integer] output=name [operator=string] [--overwrite]

  Flags:

-t  Do not create attribute table

--overwrite

  Parameters:

ainput=name
    Name of input vector map

atype=string[,string,...]
    Type Options: point,line,boundary,centroid,area Default: point,line,boundary,centroid,area

alayer=integer
    Layer number Default: 1

binput=name
    Name of input vector map

btype=string[,string,...]
    Type Options: point,line,boundary,centroid,area Default: point,line,boundary,centroid,area

blayer=integer
    Layer number Default: 1

output=name
    Name for output vector map

operator=string
    Operator defines required relation between features. A feature is written to output if the result of operation 'ainput operator binput' is true. An input feature is considered to be true, if category of given layer is defined.
         overlap: features partially or completely overlap Options: overlap Default: overlap

DESCRIPTION
v.select allows the user to select features from a vector by features from another one.

NOTES

EXAMPLES
Extract forest fire points from larger fire map:
v.select ainput=forest binput=fire output=forest_fire

Extract Italian rivers from VMAP0 watercourses map:
v.select ain=watrcrsl_eurnasia_wgs84 bin=italy_area \
         out=watrcrsl_italy op=overlap

SEE ALSO
v.overlay, GRASS SQL interface

AUTHORS
Radim Blazek

Last changed: $Date: 2006/01/05 10:43:45 $

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