## 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

## 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