v.report.1grass man page

v.report — Reports geometry statistics for vector maps.

Keywords

vector, geometry, statistics

Synopsis

v.report
v.report --help
v.report map=name [layer=string] option=string [units=string] [sort=string] [--help] [--verbose] [--quiet] [--ui]

Flags

--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog

Parameters

map=name [required]
Name of vector map
Or data source for direct OGR access
layer=string
Layer number or name
Vector features can have category values in different layers. This number determines which layer to use. When used with direct OGR access this is the layer name.
Default: 1
option=string [required]
Value to calculate
Options: area, length, coor
units=string
Units
Options: miles, feet, meters, kilometers, acres, hectares, percent
sort=string
Sort the result
Options: asc, desc
asc: Sort in ascending order
desc: Sort in descending order

Description

v.report generates a table showing the area present in each of the categories of a user-selected data layer.

Area is given in hectares, square meters, and square kilometers. If the units option is used, area is given in acres, square feet, and square miles.

Feet and acre units are always reported in their common versions (i.e. the International Foot, exactly 5280 feet in a mile), even when the location’s standard map unit is the US Survey foot.

v.report works on the full map data; therefore, the current region is ignored. If you wish to spatially limit the statistics, a map subset must be created with v.in.region and v.overlay, and then run v.report on the new map.

Example

North Carolina sample dataset:

v.report zipcodes_wake option=area units=hectares

In the output, there is an extra column added containing the results.

See Also

v.in.region, v.to.db, v.overlay

Author

Markus Neteler, GDF Hannover

Last changed: $Date: 2011-11-08 13:24:20 -0800 (Tue, 08 Nov 2011) $

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GRASS 7.0.4 Grass User's Manual