r.transect - Outputs raster map layer values lying along
user defined transect line(s).
(GRASS Raster Program)
SYNOPSIS
r.transect r.transect help r.transect [-g]
map=nameline=east,north,azimuth,distance[,east,north,azimuth,distance,...]
null=string
DESCRIPTION
This progream outputs, in ASCII, the values in a raster map
which lie along one or more user-defined transect lines.
The transects are described by their starting coordinates,
azimuth, and distance.
OPTIONS
Flags:
-g
Output easting and northing in first two columns of four column output
Parameters:
map=name
Name of an existing raster map layer to be queried.
A definition of (each) transect line, specified by the
geographic coordinates of its starting point (easting,
northing), the angle and direction of its travel
(azimuth), and its distance (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).
null=string
Character string to represent no data value.
NOTES
This program is a front-end to the
r.profile program.
It simply converts the azimuth and distance to an ending coordinate
and then runs
r.profile.
BUGS
There once were width= and result=raw|median|average
options which are not currently implemented.