i.ortho.transform(1grass)

1i.ortho.transform(1)          Grass User's Manual         i.ortho.transform(1)
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NAME

6       i.ortho.transform   - Computes a coordinate transformation based on the
7       control points.
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KEYWORDS

10       imagery, orthorectify, transformation, GCP
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SYNOPSIS

13       i.ortho.transform
14       i.ortho.transform --help
15       i.ortho.transform   [-srx]   group=name    [format=string[,string,...]]
16       [coords=name]   [--help]  [--verbose]  [--quiet]  [--ui]
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18   Flags:
19       -s
20           Display summary information
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22       -r
23           Reverse transform of coords file or coeff. dump
24           Target east,north,height coordinates to local x,y,z
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26       -x
27           Display transform matrix coefficients
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29       --help
30           Print usage summary
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32       --verbose
33           Verbose module output
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35       --quiet
36           Quiet module output
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38       --ui
39           Force launching GUI dialog
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41   Parameters:
42       group=name [required]
43           Name of input imagery group
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45       format=string[,string,...]
46           Output format
47           Options: idx, src, dst, fwd, rev, fxy, rxy, fd, rd
48           Default: fd,rd
49           idx: point index
50           src: source coordinates
51           dst: destination coordinates
52           fwd: forward coordinates (destination)
53           rev: reverse coordinates (source)
54           fxy: forward coordinates difference (destination)
55           rxy: reverse coordinates difference (source)
56           fd: forward error (destination)
57           rd: reverse error (source)
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59       coords=name
60           File containing coordinates to transform ("-" to read from stdin)
61           Local x,y,z coordinates to target east,north,height
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DESCRIPTION

64       i.ortho.transform  is  an  utility to compute transformation based upon
65       GCPs and output error measurements.
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67       If coordinates are given with the input file option or fed from  stdin,
68       both  the  input  and  the output format is "x y z" with one coordinate
69       pair per line. Reverse transform is performed with the -r flag.
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71       The format option determines how control points  are  printed  out.   A
72       summary  on  the  control  points can be printed with the -s flag.  The
73       summary includes maximum deviation observed when transforming GCPs  and
74       overall  RMS.  The  format option is ignored when coordinates are given
75       with the input file option.
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NOTES

78       Ortho-transformation is a 2-step transformation. First, source  coordi‐
79       nates  are  transformed  to sensor coordinates, then sensor coordinates
80       are transformed to target coordinates.
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TODO

86       Update this document with x,y,z<->E,N,H information
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AUTHORS

89       Brian J. Buckley
90       Glynn Clements
91       Hamish Bowman
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93       Last changed: $Date: 2018-03-14 11:57:02 +0100 (Wed, 14 Mar 2018) $
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SOURCE CODE

96       Available at: i.ortho.transform source code (history)
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98       Main index | Imagery index | Topics index | Keywords index |  Graphical
99       index | Full index
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101       © 2003-2019 GRASS Development Team, GRASS GIS 7.6.0 Reference Manual
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105GRASS 7.6.0                                               i.ortho.transform(1)