[GRASS-dev] Re: [GRASS GIS] #1: g.setproj bug: latitude_of_center and longitude_of_center ignored

[GRASS GIS]

#1: g.setproj bug: latitude_of_center and longitude_of_center ignored
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  Reporter:  neteler  |       Owner:  grass-dev at lists.osgeo.org
      Type:  defect   |      Status:  new                      
  Priority:  major    |   Milestone:  6.3.0                    
 Component:  default  |     Version:  svn-trunk                
Resolution:           |    Keywords:  proj                     
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Comment (by pkelly):

 Replying to [comment:5 martinl]:
 > Replying to [comment:3 pkelly]:
 > > Re: the commented-out 7-parameter transform
 >
 > > I originally put this in and the source is now at
 http://www.asprs.org/resources/grids/08-2001-swiss.pdf
 >
 > > As far as I can remember the two reasons I left it commented were:
 >
 > > 1) The parameters given are for CH1903+ which is apparently different
 from CH1903 - I have no idea how much or if the differences are big enough
 to be relevant.
 >
 > > 2) I didn't have any test points to verify the parameters - in
 particular we always need to check the sign of the 3 rotation parameters
 (the 4th, 5th and 6th numbers out of the 7) as the American/European
 conventions are different.
 >
 > > If somebody can verify these two points then we can uncomment the
 parameters.
 >
 > I cannot varify it (maybe someone in grass-dev/user ML), but I would
 vote for uncomment the parameters and close the ticket (or to postpone it
 for 6.4).
 >

 Well, the original bug seems to be fixed according to Markus' comments, so
 no objections from me to closing the bug. I do object very strongly though
 to uncommenting the Swiss datum parameters without fully verifying them.
 People have been known to rely on and trust what GRASS does (ha ha ;)),
 and the onus is on us as developers not to let them down and verify stuff
 like this before putting it in there. I did a lot of research and double
 checking before I added all the datum parameters that I did, and while I
 can't remember the exact details of this one (was quite a while ago) it is
 obvious that I had some doubts or it wouldn't be commented out. So until
 someone does the work to verify that they are genuinely valid and work
 then IMO they should stay disabled.

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Ticket URL: <http://trac.osgeo.org/grass/ticket/1#comment:6>
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