1gdaltransform(1) General Commands Manual gdaltransform(1)
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6 gdaltransform - .TH "gdaltransform" 1 "Fri Apr 22 2011" "GDAL"
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9 gdaltransform - transforms coordinates
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12 gdaltransform [--help-general]
13 [-i] [-s_srs srs_def] [-t_srs srs_def] [-to "NAME=VALUE"]
14 [-order n] [-tps] [-rpc] [-geoloc]
15 [-gcp pixel line easting northing [elevation]]*
16 [srcfile [dstfile]]
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19 The gdaltransform utility reprojects a list of coordinates into any
20 supported projection,including GCP-based transformations.
21 -s_srs srs def:
23 source spatial reference set. The coordinate systems that can be
24 passed are anything supported by the
25 OGRSpatialReference.SetFromUserInput() call, which includes EPSG
26 PCS and GCSes (ie. EPSG:4296), PROJ.4 declarations (as above), or
27 the name of a .prf file containing well known text.
28 -t_srs srs_def:
30 target spatial reference set. The coordinate systems that can be
31 passed are anything supported by the
32 OGRSpatialReference.SetFromUserInput() call, which includes EPSG
33 PCS and GCSes (ie. EPSG:4296), PROJ.4 declarations (as above), or
34 the name of a .prf file containing well known text.
35 -to NAME=VALUE:
37 set a transformer option suitable to pass to
38 GDALCreateGenImgProjTransformer2().
39 -order n:
41 order of polynomial used for warping (1 to 3). The default is to
42 select a polynomial order based on the number of GCPs.
43 -tps:
45 Force use of thin plate spline transformer based on available GCPs.
46 -rpc:
48 Force use of RPCs.
49 -geoloc:
51 Force use of Geolocation Arrays.
52 -i Inverse transformation: from destination to source.
54 -gcppixel line easting northing [elevation]:
56 Provide a GCP to be used for transformation (generally three or
57 more are required)
58 srcfile:
60 File with source projection definition or GCP's. If not given,
61 source projection is read from the command-line -s_srs or -gcp
62 parameters
63 dstfile:
65 File with destination projection definition.
66 Coordinates are read as pairs (or triples) of numbers per line from
68 standard input, transformed, and written out to standard output in the
69 same way. All transformations offered by gdalwarp are handled,
70 including gcp-based ones.
71 Note that input and output must always be in decimal form. There is
73 currently no support for DMS input or output.
74 If an input image file is provided, input is in pixel/line coordinates
76 on that image. If an output file is provided, output is in pixel/line
77 coordinates on that image.
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80 Simple reprojection from one projected coordinate system to another:
81 gdaltransform -s_srs EPSG:28992 -t_srs EPSG:31370
83 177502 311865
84 Produces the following output in meters in the 'Belge 1972 / Belgian
86 Lambert 72' projection:
87 244510.77404604 166154.532871342 -1046.79270555763
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91 The following command requests an RPC based transformation using the
92 RPC model associated with the named file. Because the -i (inverse) flag
93 is used, the transformation is from output georeferenced (WGS84)
94 coordinates back to image coordinates.
95 gdaltransform -i -rpc 06OCT20025052-P2AS-005553965230_01_P001.TIF
97 125.67206 39.85307 50
98 Produces this output measured in pixels and lines on the image:
100 3499.49282422381 2910.83892848414 50
102
105 Frank Warmerdam <warmerdam@pobox.com>, Jan Hartmann
106 <j.l.h.hartmann@uva.nl>
107GDAL Fri Apr 22 2011 gdaltransform(1)