1r.transect(1)                 Grass User's Manual                r.transect(1)
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NAME

6       r.transect   - Outputs raster map layer values lying along user defined
7       transect line(s).
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KEYWORDS

10       raster
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SYNOPSIS

13       r.transect
14       r.transect help
15       r.transect       [-g]       map=name       line=east,north,azimuth,dis‐
16       tance[,east,north,azimuth,distance,...]  [null=string]
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18   Flags:
19       -g  Output  easting  and  northing  in first two columns of four column
20           output
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22   Parameters:
23       map=name
24           Raster map to be queried
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26       line=east,north,azimuth,distance[,east,north,azimuth,distance,...]
27           Transect definition
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29       null=string
30           Char string to represent no data cell Default: *
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DESCRIPTION

33       This program outputs, in ASCII, the values in a raster  map  which  lie
34       along  one  or  more  user-defined  transect  lines.  The transects are
35       described by their starting coordinates, azimuth, and distance.
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37       The line parameter is a definition of (each) transect  line,  specified
38       by  the  geographic  coordinates  of  its starting point (easting, nor‐
39       thing), the angle and direction of its travel (azimuth), and  its  dis‐
40       tance (distance).
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42       The  azimuth  is  an  angle, in degrees, measured to the east of north.
43       The distance is in map units (meters for a metered database, like UTM).
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45       The null parameter can optionally be set to change the character string
46       representing null values.
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NOTES

49       This  program  is a front-end to the r.profile program.  It simply con‐
50       verts the azimuth and distance to an ending coordinate  and  then  runs
51       r.profile.    There  once  were  width=  and  result=raw|median|average
52       options which are not currently implemented.
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SEE ALSO

55       r.profile
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AUTHOR

58       Michael Shapiro, U.S. Army Construction Engineering Research Laboratory
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60       Last changed: $Date: 2004/02/24 00:35:46 $
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62       Full index
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66GRASS 6.2.2                                                      r.transect(1)