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
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.
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
d.geodesic
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
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GRASS Development Team,
GRASS GIS 8.5.0dev Reference Manual