On Sun, Jan 18, 2009 at 6:52 PM, Chris h <chris...@magma.ca> wrote: > On Sunday 18 January 2009 11:04:13 Florian El Ahdab wrote: >> - I believe Qgis doesn't use the S57 sublayers and that's why nothing gets >> displayed. Is there any chance that I am right? If I am right, > > Your most likely correct.
Yes, QGIS always opens first sublayers and doesn't care about the rest. >> I would like >> to help with the implementation for this kind of problem. Can anyone in the >> dev team give me directions on where to begin (I have spent some time in >> the source and API of both Qgis and GDAL and feel I can contribute here...) > > Perhaps a good start would be reviewing the submitted material above and then > following the directions and advice of the qgis development team. First of all, a small change in OGR provider in QGIS will be needed to allow sublayers. This provider awaits a file as input string - let's add an optional parameter that would specify the layer inside the file, e.g.: /data/gis/s-57/ca49995b.000&layer=4 (note the added "&layer=4") Then in GUI: when an input file for OGR provider is selected, check whether there's more than one sublayer - if so, open a dialog and let user select which sublayers he would like to see. Create input strings for OGR provider from the chosen sublayers and load them. Patches are always welcome :-) Martin _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
