m.measure - GRASS GIS manual

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: project 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 feet, square meters and square kilometers.

EXAMPLES

Distance example in a latitude-longitude coordinate reference system (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

SOURCE CODE

Available at: m.measure source code (history)

Latest change: Wednesday Feb 12 23:02:46 2025 in commit: 9c1146064f7c3c21fb0746063fa8bd2cdf4633cb