r.transect(1grass) GRASS GIS User's Manual r.transect(1grass)
NAME
r.transect - Outputs raster map layer values lying along user defined
transect line(s).
KEYWORDS
raster, profile, transect
SYNOPSIS
r.transect
r.transect --help
r.transect [-g] map=name line=east,north,azimuth,dis-
tance[,east,north,azimuth,distance,...] [null_value=string] [--help]
[--verbose] [--quiet] [--ui]
Flags:
-g
Output easting and northing in first two columns of four column
output
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog
Parameters:
map=name [required]
Raster map to be queried
line=east,north,azimuth,distance[,east,north,azimuth,distance,...] [re-
quired]
Transect definition
null_value=string
String representing NULL value
Default: *
DESCRIPTION
This program outputs, in ASCII, the values in a raster map which lie
along one or more user-defined transect lines. The transects are de-
scribed by their starting coordinates, azimuth, and distance.
The line parameter is a definition of (each) transect line, specified
by the geographic coordinates of its starting point (easting, nor-
thing), the angle and direction of its travel (azimuth), and its dis-
tance (distance).
The azimuth is an angle, in degrees, measured to the east of north.
The distance is in map units (meters for a metered database, like UTM).
The null parameter can optionally be set to change the character string
representing null values.
NOTES
This program is a front-end to the r.profile program. It simply con-
verts the azimuth and distance to an ending coordinate and then runs
r.profile. There once were width= and result=raw|median|average op-
tions which are not currently implemented.
SEE ALSO
r.profile, wxGUI profile tool
AUTHOR
Michael Shapiro, U.S. Army Construction Engineering Research Laboratory
SOURCE CODE
Available at: r.transect source code (history)
Accessed: unknown
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GRASS 7.8.7 r.transect(1grass)
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