1ROTCONVERTER(1) Generic Mapping Tools ROTCONVERTER(1)
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6 rotconverter - Manipulate finite and stage rotations
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9 rotconverter [ +|- ] rotA [ +|- rotB ] [ +|- rotC ] ... [ -C[a|t]] [
10 -D ] [ -Fin/out ] [ -N ] [ -S ] [ -T ] [ -V ]
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13 rotconverter reads one or more plate motion models (rotations) stored
14 in the given files. If more than one plate motion model is given we
15 will add or subtract them in the order they were listed. The minus
16 sign means we should first transpose the rotation and then add it to
17 the previous rotation. The input files must all be of the same type
18 (stage poles or finite rotations) which may differ from the desired
19 output format; see -F. If a file cannot be opened we will attempt to
20 decode the file name as a single rotation whose parameters are sepa‐
21 rated by slashes.
22 No space between the option flag and the associated arguments.
23 Use upper case for the option flags and lower case for modifiers.
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25 rotX Name of a file with a plate motion model. Separate several
26 files with desired operator (+ or -). The very first file may
27 also have a leading minus to imply a transpose. If any of the
28 specified rotation models cannot be opened as a file, we will
29 try to decode the file name as lon/lat/tstart[/tstop]/angle for
30 a single rotation given on the command line. The tstop argument
31 is required for stage poles only. For a finite rotation without
32 any time information, give lon/lat/angle only.
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35 -C Write out a column header record indentifying the various col‐
36 umns [Default is no header record]. Append a to indicate open‐
37 ing angles and t to indicate opening rates [Default].
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39 -D Report longitudes use the -180/+180 range [Default is 0/360].
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41 -F Specify both the input and output format for rotations. The in
42 and out flags must be either f or s for finite or stage rota‐
43 tions, respectively. Note that both must be specified if -F is
44 set [Default is -Fff (both input and output are finite rota‐
45 tions)].
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47 -N Place all output poles in the northern hemisphere [Default
48 reports positive rotation angles].
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50 -S Place all output poles in the southern hemisphere [Default
51 reports positive rotation angles].
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53 -T Transpose the final result, i.e., change the sign of the rota‐
54 tion angles.
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56 -V Verbose option: Report statistics of extracted rotations
57 [Default is silent].
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60 To convert the finite rotations in the file model_finite.APM to stage
61 poles, run
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63 rotconverter model_finite.APM -Ffs > model_stages.APM
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65 To obtain Nazca motion relative to Pacific hotspots by adding the
66 motion of Nazca relative to a fixed Pacific to the Pacific-Hotspot ref‐
67 erence model DC85_stages.d, and report the result as finite reconstruc‐
68 tion poles in the northern hemisphere, try
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70 rotconverter DC85_stages.APM + Pac_Naz_stages.RPM -N -Fsf >
71 Naz_HS_finite.APM
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73 To add the final rotations ROT(150.1, 70.5, -20.3) and ROT (145.0,
74 40.0, 11.4), try
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76 rotconverter 150.1/70.5/-20.3 + 145/40/11.4
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78 which prints out 157.32, -80.44, 11.97.
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81 backtracker(1), hotspotter(1), originator(1)
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85GMT 4.3.1 15 May 2008 ROTCONVERTER(1)