+1 for everything you said here .. that sounds wonderful .. being warned if a reprojection does not make any sense is a huge usability improvement for occassional GIS Users ..
On Thu, Apr 3, 2014 at 12:27 AM, Even Rouault <[email protected]> wrote: > Hi, > > This is something I discussed with Paolo during the past Code Sprint. In the > original EPSG databases, there is an area of applicability defined as a > bounding box in latitude,longitude for each spatial reference system. In the > import process of the EPSG database used for libgeotiff, GDAL, proj.4 and > PostGIS ( detailed in > http://svn.osgeo.org/metacrs/geotiff/trunk/libgeotiff/csv/README ), that area > of > applicability is not currently imported in the .csv files concerning > geographic > or projected SRS (but they are imported for datum shift transforms). > > A potential improvement would be to add it and expose it in the GDAL > OGRSpatialReference object, so that QGIS could benefit from it. > This could be used for example : > - to warn the user when reprojection to a SRS is completely or partially out > of its area of applicability > - to filter the SRS catalog to offer only the relevant SRS at a point or on a > zone > - ... > > Even > > -- > Geospatial professional services > http://even.rouault.free.fr/services.html > _______________________________________________ > Qgis-developer mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-developer _______________________________________________ Qgis-developer mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-developer
