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
 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

SEE ALSO

d.geodesic

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: $Date$