NAME¶
d.measure - Measures the lengths and areas of features drawn by
the user in the active display frame on the graphics monitor.
KEYWORDS¶
display, geometry
SYNOPSIS¶
d.measure
d.measure help
d.measure [-
smk] [
c1=
string]
[
c2=
string] [--
verbose] [--
quiet]
Flags:¶
- -s
-
Suppress clear screen
- -m
-
Output in meters only
- -k
-
Output in kilometers as well
- --verbose
-
Verbose module output
- --quiet
-
Quiet module output
Parameters:¶
- c1=string
-
Line color 1
Options:
red,orange,yellow,green,blue,indigo,violet,white,black,gray,brown,magenta,aqua,grey,cyan,purple
Default: white
- c2=string
-
Line color 2
Options:
red,orange,yellow,green,blue,indigo,violet,white,black,gray,brown,magenta,aqua,grey,cyan,purple
Default: black
DESCRIPTION¶
d.measure provides the user with an interactive way to measure the
lengths and areas of lines and polygons drawn by the user in the active frame
on the graphics monitor. Lines and polygons are drawn using a pointing device
(mouse). Each line segment is drawn in colors
c1 and
c2. A mouse
button menu indicates that the user can find out the geographic coordinates of
the cursor location, draw line segments between user-specified vertices, and
quit
d.measure. Lines and polygons are defined by the series of
vertices marked by the user. If more than two successive vertices are drawn,
d.measure prints the area encompassed (
d.measure will assume
the area is closed even if the user has not joined the first and last
vertices). Areas can be stated in hectares, square miles, square meters and
square kilometers. Lines and polygons drawn using
d.measure will
overlay (not overwrite) whatever display currently appears in the active frame
on the graphics monitor. The user can, for example, run
d.rast or
d.vect prior to running
d.measure, and use raster and/or vector
maps as a backdrop.
NOTES¶
d.measure uses all segments drawn by the user when computing area. If the
user draws an area within another area, the combined area of both regions will
be output.
TODO¶
Output lengths in the same units as those of the current LOCATION as found in
the PROJ_UNITS file (see
g.proj). Volunteers are welcome for this task.
SEE ALSO¶
d.frame
d.graph
d.rast
d.vect
d.where
g.proj
AUTHORS¶
James Westervelt,
Michael Shapiro,
U.S. Army Construction Engineering Research Laboratory
Last changed: $Date: 2011-11-08 12:29:50 +0100 (Tue, 08 Nov 2011) $
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