Hi Borys, 2010/6/11 Borys Jurgiel <[email protected]>: >> @Borys: it might be related to #2491, but in this case transparency >> works. I am in this good situation, that on my maps no data is white, >> so setting transparency do them no harm. > > Unless you have white pixels within the data area :p
But of course I do; since I cope mostly with topo maps - it is useful to have transparency for white pixels >> @Błażej: you can also edit black areas with any non-gis-related raster >> tool, set them white and then open in QGIS and set transparency. Just >> an old trick ;) > > It's not a solution, it's heresy ;)) Nodata means nodata and nothing else. For > formats not supporting nodata (like geoTIFF) there are two workarounds and > both should work. ok :) it just worked for me and mapinfo years ago but I cannot recall if these were geotiffs or tiffs > One of them is adding the alpha channel and setting it to 0, the second is to > choose any non used value as the representative of nodata. If Błażej's files > have "0" value used for both nodata and some data, I suppose there is also the > alpha channel used and it should be handled by qgis. > > But it isn't and we could fix it. Looks like a good start for you to work with > cpp issues. Just set up the compile environment in the end :p no idea if that's qgis or gdal issue though... Milena -- Milena Nowotarska http://wiki.osgeo.org/wiki/Milena_Nowotarska http://quantum-gis.pl/ _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
