Ubuntu Manpage: g.setproj - Interactively reset the location's projection settings.

NAME

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

KEYWORDS

       general, projection

SYNOPSIS

       g.setproj
       g.setproj help
       g.setproj  [--verbose]  [--quiet]

DESCRIPTION

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

NOTES

The user running g.setproj must own the PERMANENT mapset and it must be currently selected. It is highly
recommended to run g.setproj after creating a new location so that conversion programs (such as v.proj)
can be run.

The user will be prompted for the projection name. Most projections are supported. The PROJ.4
abbreviations for the names are used with two exceptions, viz. 'll', for latitude / longitude geographic
co-ordinates, and 'stp', for the State Plane Co-ordinate system (used in the USA).

After the projection name, the user will be asked for a geodetic datum. If no datum transformation
support is needed, the question may be answered with no, and no datum will be specified in the PROJ_INFO
file. If this is the case the user must specify the ellipsoid (model of the curvature of the earth) to be
used, otherwise it is determined by the datum being used.

If the datum or ellipsoid required are not listed within this program, the user/administrator may add the
definition to the files datum.table, datumtransform.table and ellipse.table in the $GISBASE/etc/
directory.

Depending on the projection selected, the user will then be prompted for the various other parameters
required to define it.

The projections of aea, lcc, merc, leae, leac, and tmerc will generate a request to the user for the
prime meridian and standard parallel for the output map.

AUTHOR