This is the command v.whatgrass that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
v.what - Queries a vector map at given locations.
KEYWORDS
vector, querying, position
SYNOPSIS
v.what
v.what --help
v.what [-dagj] map=name[,name,...] [layer=string[,string,...]]
[type=string[,string,...]] coordinates=east,north [distance=float] [--help]
[--verbose] [--quiet] [--ui]
Flags:
-d
Print topological information (debugging)
-a
Print attribute information
-g
Print the stats in shell script style
-j
Print the stats in JSON
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog
Parameters:
map=name[,name,...] [required]
Name of vector map(s)
layer=string[,string,...]
Layer number or name (’-1’ for all layers)
A single vector map can be connected to multiple database tables. This number
determines which table to use. When used with direct OGR access this is the layer
name.
Default: -1
type=string[,string,...]
Input feature type
Options: point, line, boundary, centroid, area, face, kernel
Default: point,line,area,face
coordinates=east,north [required]
Coordinates for query
’-’ for 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 coordinates=637502.25,221744.25
Find closest hospital to given position within given distance (search radius):
v.what hospitals coordinates=542690.4,204802.7 distance=2000000
Use v.whatgrass online using onworks.net services
