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, profile, transect
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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_value=string]   [--help]
17       [--verbose]  [--quiet]  [--ui]
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19   Flags:
20       -g
21           Output easting and northing in first two  columns  of  four  column
22           output
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24       --help
25           Print usage summary
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27       --verbose
28           Verbose module output
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30       --quiet
31           Quiet module output
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33       --ui
34           Force launching GUI dialog
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36   Parameters:
37       map=name [required]
38           Raster map to be queried
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40       line=east,north,azimuth,distance[,east,north,azimuth,distance,...]
41       [required]
42           Transect definition
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44       null_value=string
45           String representing NULL value
46           Default: *
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DESCRIPTION

49       This program outputs, in ASCII, the values in a raster  map  which  lie
50       along  one  or  more  user-defined  transect  lines.  The transects are
51       described by their starting coordinates, azimuth, and distance.
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53       The line parameter is a definition of (each) transect  line,  specified
54       by  the  geographic  coordinates  of  its starting point (easting, nor‐
55       thing), the angle and direction of its travel (azimuth), and  its  dis‐
56       tance (distance).
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58       The  azimuth  is  an  angle, in degrees, measured to the east of north.
59       The distance is in map units (meters for a metered database, like UTM).
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61       The null parameter can optionally be set to change the character string
62       representing null values.
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NOTES

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

71       r.profile, wxGUI profile tool
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AUTHOR

74       Michael Shapiro, U.S. Army Construction Engineering Research Laboratory
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76       Last changed: $Date: 2012-11-25 11:59:42 +0100 (Sun, 25 Nov 2012) $
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SOURCE CODE

79       Available at: r.transect source code (history)
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81       Main index | Raster index | Topics index | Keywords index  |  Graphical
82       index | Full index
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84       © 2003-2019 GRASS Development Team, GRASS GIS 7.6.0 Reference Manual
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88GRASS 7.6.0                                                      r.transect(1)
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