GRASS GIS manual: m.measure

Note: A new GRASS GIS stable version has been released: GRASS GIS 7.8, available here.
Updated manual page: here

NAME

m.measure - Measures the lengths and areas of features.

KEYWORDS

miscellaneous, measurement, distance, area

SYNOPSIS

m.measure

m.measure --help

m.measure [-g] coordinates=east,north[,east,north,...] [units=string] [--help] [--verbose] [--quiet] [--ui]

Flags:

-g: Shell script style
--help: Print usage summary
--verbose: Verbose module output
--quiet: Quiet module output
--ui: Force launching GUI dialog

Parameters:

coordinates=east,north[,east,north,...] [required]: Coordinates
units=string: Units; Default: location map units; Options: miles, feet, meters, kilometers, acres, hectares

DESCRIPTION
EXAMPLES
SEE ALSO
AUTHORS

DESCRIPTION

m.measure provides the user with a way to measure the lengths and areas of lines and polygons. Areas can be stated in acres, hectares, square miles, square meters and square kilometers.

EXAMPLES

Distance example in a latitude-longitude location (on great circle, i.e. an orthodrome):

Bonn_DE="7.09549,50.73438"
Philadelphia_US="-75.16379,39.95233"

m.measure coordinates="$Bonn_DE,$Philadelphia_US" units=kilometers 
Length:  6217.916452 kilometers

Visualization (with d.geodesic) of m.measure distance example

As an example for the North Carolina sample dataset, here four points describing a square of 1000m side length:

m.measure units=meters \
  coordinates=922000,2106000,923000,2106000,923000,2107000,922000,2107000
Length:  3000.000000 meters
Area:    1000000.000000 square meters

# script style output:
m.measure -g units=hectares \
  coordinates=922000,2106000,923000,2106000,923000,2107000,922000,2107000
units=meters,square meters
length=3000.000000
area=1000000.000000

AUTHORS

Glynn Clements
Some updates by Martin Landa, CTU in Prague, Czech Republic

Derived from d.measure by James Westervelt, Michael Shapiro, U.S. Army Construction Engineering Research Laboratory

Last changed: $Date$

SOURCE CODE

Available at: m.measure source code (history)