[GRASS-dev] Re: [GRASS GIS] #785: wx location wizard: doesn't show all datum transform opts

GRASS GIS trac at osgeo.org
Mon Oct 12 07:28:50 EDT 2009

#785: wx location wizard: doesn't show all datum transform opts
  Reporter:  hamish    |       Owner:  grass-dev at lists.osgeo.org
      Type:  defect    |      Status:  new                      
  Priority:  critical  |   Milestone:  6.4.0                    
 Component:  wxGUI     |     Version:  svn-develbranch6         
Resolution:            |    Keywords:  location wizard          
  Platform:  Linux     |         Cpu:  x86-64                   
Comment (by hamish):

 The new datum transform GUI is a solid step forward. Can it be integrated
 as a page of the wizard instead of a popup? (radio buttons?)

 Unfortuanetly the terms in the wizard Summary page do not reflect the
 selection you make, and once the location is created the datum stuff
 doesn't make it to the PROJ_INFO file again.

 For datum -> WGS84 there is no popup. Even though there is only one
 choice, in an old discussion we decided to show the list anyway so the
 user knew what was going on. It's just an [Ok] confirmation, so no big
 hassle for the user to step past.


 The proj_desc.table will have to be manually dealt with, but let's get the
 datum stuff sorted out first. (lessons learned, etc)
 In effect we (well, for now you anyway) are rewriting g.setproj using
 Python instead of C.
 Glynn(?) did a nice job extracting those tables which should make things
 much easier.

 if you look at any of the tmerc projections in the EPSG file you will see
 some of the terms which are used to define it. The user should be able to
 recreate anything there via the prompts.

 thanks & sorry I can't give you more coding help right now,

Ticket URL: <https://trac.osgeo.org/grass/ticket/785#comment:20>
GRASS GIS <http://grass.osgeo.org>

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