[QGIS-trac] Re: [Quantum GIS] #3017: Save as shapefile in AGD84 CRS

[Quantum GIS]

#3017: Save as shapefile in AGD84 CRS
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        Reporter:  micha                             |         Owner:  jef          
            Type:  bug                               |        Status:  closed       
        Priority:  major: does not work as expected  |     Milestone:  Version 1.6.0
       Component:  Vectors                           |       Version:  1.5.0        
      Resolution:  worksforme                        |      Keywords:  CRS shapefile
Platform_version:  Lenny                             |      Platform:  Debian       
        Must_fix:  No                                |   Status_info:  0            
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Comment(by micha):

 Replying to [comment:1 jef]:
 > Replying to [ticket:3017 micha]:
 > > A text file of locations in the AGD84 zone 51 CRS (S. Hemisphere, EPSG
 20351) was imported with the delimited text plugin. The this layer was
 saved as a shapefile, choosing the AGD84 CRS. This resulted in a "Latitude
 or Longitude exceeds limits" error. The global CRS was EPSG:4326.
 > > Changing the global CRS to EPSG:20351 does solve the problem and
 allows saving as a shapefile with the correct CRS. But I think this
 shouldn't occur in any global CRS.
 > > (checked both on Linux and Windows)
 >
 > I can only reproduce the problem, when I don't actually specify the
 right CRS for the delimited text layer (ie. keep it WGS84).   "Saving as"
 in AGD84 then means reprojecting from WGS84 to AGD84 and that leads to the
 PROJ exception as the coordinates are illegal for WGS84.
 >
 > When setting the coordinate system of the delimited text layer to AGD84,
 saving as AGD84 works fine.
 >
 > I don't think this is a bug.

 The problem, I think, is the default global CRS. If the user just leaves
 the default, then loads a csv file, QGIS *assumes* it is in WGS84, and
 there's no place to indicate otherwise. Then when he wants to export to
 shape with the correct CRS, it fails. Apparently this behavior of the
 default global CRS is not so obvious to users.
 Thanks,
 Micha

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Ticket URL: <https://trac.osgeo.org/qgis/ticket/3017#comment:2>
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