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

       Trevor Wiens
       Edmonton, Alberta, Canada

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.

       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

       vector, querying, position

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

d.what.rast,d.what.vect,v.rast.stats,v.vect.stats,v.what.rast,v.what.rast3,v.what.vect

       Available at: v.what source code (history)

       Accessed: Friday Apr 04 01:20:39 2025

       Main index | Vector index | Topics index | Keywords index | Graphical index | Full index

       © 2003-2025 GRASS Development Team, GRASS GIS 8.4.1 Reference Manual

GRASS 8.4.1                                                                                       v.what(1grass)

v.whatv.what--helpv.what    [-dagjm]    map=name[,name,...]     [layer=string[,string,...]]      [type=string[,string,...]]
       coordinates=east,north  [distance=float]   [columns=name[,name,...]]   [--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

       -m
           Print multiple features if overlapping features are found

       --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: -1type=string[,string,...]
           Input feature type
           Options: point,line,boundary,centroid,area,face,kernel
           Default: point,line,area,facecoordinates=east,north[required]
           Coordinates for query
           ’-’ for standard input

       distance=float
           Query threshold distance
           Default: 0columns=name[,name,...]
           Name of attribute column(s)
           Default: all columns