1g.setproj(1)                  Grass User's Manual                 g.setproj(1)
2
3
4

NAME

6       g.setproj  - Interactively reset the location's projection settings.
7

KEYWORDS

9       general
10

SYNOPSIS

12       g.setproj
13       g.setproj help
14       g.setproj  [--verbose]  [--quiet]
15

NAME

17       g.setproj  - Allows the user to create the PROJ_INFO and the PROJ_UNITS
18       files to record the projection information associated  with  a  current
19       location.
20

SYNOPSIS

22       g.setproj
23

DESCRIPTION

25       Allows a user to create a PROJ_INFO file in the PERMANENT mapset of the
26       current location. PROJ_INFO file  is  used  to  record  the  projection
27       information associated with the specified mapset.
28

NOTES

30       The user running g.setproj must own the PERMANENT mapset and it must be
31       currently selected.  It is highly recommended to  run  g.setproj  after
32       creating  a  new  location so that conversion programs (such as v.proj)
33       can be run.
34
35       The user will be prompted for the projection  name.   Most  projections
36       are supported. The PROJ.4 abbreviations for the names are used with two
37       exceptions, viz. 'll', for latitude  /  longitude  geographic  co-ordi‐
38       nates,  and  'stp', for the State Plane Co-ordinate system (used in the
39       USA).
40
41       After the projection name, the user will be asked for a geodetic datum.
42       If  no  datum  transformation  support  is  needed, the question may be
43       answered with no, and no datum will be specified in the PROJ_INFO file.
44       If  this  is the case the user must specify the ellipsoid (model of the
45       curvature of the earth) to be used, otherwise it is determined  by  the
46       datum being used.
47
48       If  the datum or ellipsoid required are not listed within this program,
49       the user/administrator may add the definition to the files datum.table,
50       datumtransform.table and ellipse.table in the $GISBASE/etc/ directory.
51
52       Depending  on  the  projection selected, the user will then be prompted
53       for the various other parameters required to define it.
54
55       The projections of aea, lcc, merc, leae, leac, and tmerc will  generate
56       a  request to the user for the prime meridian and standard parallel for
57       the output map.
58

SEE ALSO

60       g.proj, m.proj, r.proj, v.proj, PROJ.4
61
62       Further reading
63
64                      A guide to Map Projections by USGS
65
66                      ASPRS Grids and Datum
67
68                      MapRef - The Collection of Map Projections and Reference
69                     Systems for Europe
70
71                      Projections Transform List (PROJ4)
72

AUTHOR

74       Irina  Kosinovsky,  U.S. Army Construction Engineering Research Labora‐
75       tory
76       Morten Hulden, morten at tor.ngb.se - rewrote module and added 121 pro‐
77       jections
78       Andreas  Lange,  andreas.lange  at rhein-main.de - added prelimnary map
79       datum support
80
81       Last changed: $Date: 2007-04-11 16:46:24 +0200 (Wed, 11 Apr 2007) $
82
83
84
85GRASS 6.3.0                                                       g.setproj(1)
Impressum