[QGIS-trac] Re: [Quantum GIS] #1487: QGIS fails to recognise Shapefile projection

Quantum GIS qgis at qgis.org
Wed Aug 19 06:00:19 EDT 2009


#1487: QGIS fails to recognise Shapefile projection
-----------------------------------------------------+----------------------
        Reporter:  marisn                            |         Owner:  nobody       
            Type:  bug                               |        Status:  closed       
        Priority:  major: does not work as expected  |     Milestone:  Version 1.2.0
       Component:  Projection Support                |       Version:  1.2.0        
      Resolution:  fixed                             |      Keywords:               
Platform_version:                                    |      Platform:  Gentoo       
        Must_fix:  No                                |   Status_info:  0            
-----------------------------------------------------+----------------------
Changes (by homann):

  * status:  reopened => closed
  * resolution:  => fixed

Comment:

 The WKT is read by the OGR library to an OGR-internal format, and then
 exported to proj4 string from that OGR format (for projection). I would
 guess that OGR does not recognize the "LKS92" datum, and assigns no datum.

 So, the proj4 string you in the output above IS created from OGR.

 I think this bug should be sent to OGR maintainer. The best solution is
 that OGR converts the LKS92 datum to a +towgs84=0,0,0,0,0,0,0

 Note: Now QGIS creates a custom CRS from the proj4 string if no match was
 found. Unfortunately, as OGR does not supply any datum

-- 
Ticket URL: <https://trac.osgeo.org/qgis/ticket/1487#comment:7>
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Quantum GIS is an Open Source GIS viewer/editor supporting OGR, PostGIS, and GRASS formats


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