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<p class=MsoNormal>Good day all! <br>
<br>
When I try to create a QgsCoordinateReferenceSystem object from an image’s
metadata (via GDAL->GetProjectionRef()), I get the following output:<br>
<br>
/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp: 245:
(createFromWkt) QgsCoordinateReferenceSystem::createFromWkt(QString theWkt)
using: PROJCS["UTM Zone 36, Southern Hemisphere",GEOGCS["Unknown
datum based upon the Clarke 1880 ellipsoid",DATUM["Not specified
(based on Clarke 1880 spheroid)",SPHEROID["Clarke
1880",6378249.144808011,293.4663076556303,AUTHORITY["EPSG","7034"]]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",33],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",10000000],UNIT["Meter",1]]<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
491: (getRecord) running query: select * from tbl_srs where
parameters='+proj=utm +zone=36 +south +a=6378249.144808011 +b=6356514.966204134
+units=m +no_defs'<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
498: (getRecord) failed : /resources/srs.db does not exist!<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
413: (createFromProj4) globbing search for srsid from this proj string<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
753: (setMapUnits) Projection has linear units of Meter<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
791: (findMatchingProj) entered.<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
795: (findMatchingProj) QgsCoordinateReferenceSystem::findMatchingProj will
only work if prj acr ellipsoid acr and proj4string are set and the current
projection is valid!<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
416: (createFromProj4) globbing search for srsid returned srsid: 0<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
431: (createFromProj4) Projection is not found in databases.<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
753: (setMapUnits) Projection has linear units of Meter<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
491: (getRecord) running query: select * from tbl_srs where
parameters='+proj=utm +zone=36 +south +a=6378249.144808011 +b=6356514.966204134
+units=m +no_defs'<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
498: (getRecord) failed : /resources/srs.db does not exist!<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
442: (createFromProj4) Projection appears to be valid. Save to database!<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
1266: (saveAsUserCRS) Update or insert sql <o:p></o:p></p>
<p class=MsoNormal>insert into tbl_srs
(description,projection_acronym,ellipsoid_acronym,parameters,is_geo) values ('
* Generated CRS (+proj=utm +zone=36 +south +a=6378249.144808011
+b=6356514.966204134 +units=m +no_defs)','utm','','+proj=utm +zone=36 +south
+a=6378249.144808011 +b=6356514.966204134 +units=m +no_defs',0)<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
491: (getRecord) running query: select * from tbl_srs where
parameters='+proj=utm +zone=36 +south +a=6378249.144808011 +b=6356514.966204134
+units=m +no_defs'<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
498: (getRecord) failed : /resources/srs.db does not exist!<o:p></o:p></p>
<p class=MsoNormal>/home/fielies/dev/cpp/qgis/src/core/qgscoordinatereferencesystem.cpp:
469: (createFromProj4) Couldn't find newly added proj string?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>And then after this, the call to ‘crs->createFromWkt(projDefinition)’
returns false.<br>
Could someone please tell me why this method returns false?<br>
<br>
Thank you!<o:p></o:p></p>
<p class=MsoNormal>Francois<o:p></o:p></p>
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