1g.setproj(1)                  Grass User's Manual                 g.setproj(1)
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NAME

6       g.setproj  - Allows the user to create the PROJ_INFO and the PROJ_UNITS
7       files to record the projection information associated  with  a  current
8       location.
9

SYNOPSIS

11       g.setproj
12

DESCRIPTION

14       Allows a user to create a PROJ_INFO file in the PERMANENT mapset of the
15       current location. PROJ_INFO file  is  used  to  record  the  projection
16       information associated with the specified mapset.
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NOTES

19       User  running g.setproj must own PERMANENT mapset.  It is highly recom‐
20       mended to run g.setproj after creating a new location so  that  conver‐
21       sion programs (such as v.proj) can be run.
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23       The current location must not contain a PROJ_INFO or PROJ_UNITS file.
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25       The  user  will  be prompted for the projection name.  Most projections
26       are supported. The PROJ.4 abbreviations for the names are used with two
27       exceptions,  viz.  'll',  for  latitude / longitude geographic co-ordi‐
28       nates, and 'stp', for the State Plane Co-ordinate system (used  in  the
29       USA).
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31       After the projection name, the user will be asked for a geodetic datum.
32       If no datum transformation support  is  needed,  the  question  may  be
33       answered with no, and no datum will be specified in the PROJ_INFO file.
34       If this is the case the user must specify the ellipsoid (model  of  the
35       curvature  of  the earth) to be used, otherwise it is determined by the
36       datum being used.
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38       If the datum or ellipsoid required are not listed within this  program,
39       the user/administrator may add the definition to the files datum.table,
40       datumtransform.table and ellipse.table in the $GISBASE/etc/ directory.
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42       Depending on the projection selected, the user will  then  be  prompted
43       for the various other parameters required to define it.
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45       The  projections of aea, lcc, merc, leae, leac, and tmerc will generate
46       a request to the user for the prime meridian and standard parallel  for
47       the output map.
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SEE ALSO

50       g.proj, r.proj, v.proj, PROJ.4
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52       Further reading
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54                      ASPRS Grids and Datum
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56                      MapRef - The Collection of Map Projections and Reference
57                     Systems for Europe
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59                      Projections Transform List (PROJ4)
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AUTHOR

62       Irina Kosinovsky, U.S. Army Construction Engineering  Research  Labora‐
63       tory
64       Morten Hulden, morten@tor.ngb.se - rewrote module and added 121 projec‐
65       tions
66       Andreas Lange, andreas.lange@rhein-main.de - added prelimnary map datum
67       support
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69       Last changed: $Date: 2006/05/02 14:09:18 $
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73GRASS 6.2.2                                                       g.setproj(1)
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