NAME¶

v.what - Queries a vector map layer at given locations.

KEYWORDS¶

vector, querying

SYNOPSIS¶

v.what v.what help v.what [-dag] map=name[,name,...] [east_north= east,north[,east,north,...]] [distance= float] [--verbose] [--quiet]

Flags:¶

-d

 

Print topological information (debugging)

-a

 

Print attribute information

-g

 

Print the stats in shell script style

--verbose

 

Verbose module output

--quiet

 

Quiet module output

Parameters:¶

map=name[,name,...]

 

Name of input vector map

east_north=east,north[,east,north,...]

 

Coordinates for query

 

If not given reads from standard input

distance=float

 

Query threshold distance

 

Default: 0

DESCRIPTION¶

v.what outputs the category number value(s) associated with user-specified location(s) in user-specified vector map layer(s). This module was derived from the d.what.vect module by removing all interactive code and modification of the output for easy parsing. Using the -g flag generates script-style output which is easily parsable.

EXAMPLE¶

North Carolina sample dataset example: Query polygon at given position: v.what zipcodes_wake east_north=637502.25,221744.25 Find closest hospital to given position within given distance (search radius): v.what hospitals east_north=542690.4,204802.7 distance=2000000

SEE ALSO¶

d.what.vect

AUTHOR¶

Trevor Wiens Edmonton, Alberta, Canada Last changed: $Date: 2014-02-10 23:43:18 +0100 (Mon, 10 Feb 2014) $ Full index © 2003-2014 GRASS Development Team