.TH m.measure 1grass "" "GRASS 7.8.5" "GRASS GIS User's Manual"
.SH NAME
\fI\fBm.measure\fR\fR  \- Measures the lengths and areas of features.
.SH KEYWORDS
miscellaneous, measurement, distance, area
.SH SYNOPSIS
\fBm.measure\fR
.br
\fBm.measure \-\-help\fR
.br
\fBm.measure\fR [\-\fBg\fR] \fBcoordinates\fR=\fIeast,north\fR[,\fIeast,north\fR,...]  [\fBunits\fR=\fIstring\fR]   [\-\-\fBhelp\fR]  [\-\-\fBverbose\fR]  [\-\-\fBquiet\fR]  [\-\-\fBui\fR]
.SS Flags:
.IP "\fB\-g\fR" 4m
.br
Shell script style
.IP "\fB\-\-help\fR" 4m
.br
Print usage summary
.IP "\fB\-\-verbose\fR" 4m
.br
Verbose module output
.IP "\fB\-\-quiet\fR" 4m
.br
Quiet module output
.IP "\fB\-\-ui\fR" 4m
.br
Force launching GUI dialog
.SS Parameters:
.IP "\fBcoordinates\fR=\fIeast,north[,\fIeast,north\fR,...]\fR \fB[required]\fR" 4m
.br
Coordinates
.IP "\fBunits\fR=\fIstring\fR" 4m
.br
Units
.br
Default: location map units
.br
Options: \fImiles, feet, meters, kilometers, acres, hectares\fR
.SH DESCRIPTION
\fIm.measure\fR 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.
.SH EXAMPLES
Distance example in a latitude\-longitude location (on great circle, i.e. an orthodrome):
.br
.nf
\fC
Bonn_DE=\(dq7.09549,50.73438\(dq
Philadelphia_US=\(dq\-75.16379,39.95233\(dq
m.measure coordinates=\(dq$Bonn_DE,$Philadelphia_US\(dq units=kilometers
Length:  6217.916452 kilometers
\fR
.fi
.br
\fIVisualization (with d.geodesic) of m.measure distance example\fR
.PP
As an example for the North Carolina sample dataset, here four points
describing a square of 1000m side length:
.br
.nf
\fC
m.measure units=meters \(rs
  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 \(rs
  coordinates=922000,2106000,923000,2106000,923000,2107000,922000,2107000
units=meters,square meters
length=3000.000000
area=1000000.000000
\fR
.fi
.SH SEE ALSO
\fI
d.geodesic
\fR
.SH AUTHORS
Glynn Clements
.br
Some updates by Martin Landa, CTU in Prague, Czech Republic
.br
.br
Derived from d.measure by James Westervelt, Michael Shapiro, U.S. Army
Construction Engineering Research Laboratory
.SH SOURCE CODE
.PP
Available at: m.measure source code (history)
.PP
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.PP
© 2003\-2020
GRASS Development Team,
GRASS GIS 7.8.5 Reference Manual