i'm trying to find the difference between raster management in qgis ver. 1.8 and 1.9. but there are some features that i don't understand.
as it has already been stated in other threads, qgis has some problems (error ?) in treating the value "no data" in raster. it makes some confusion in applying transparency to no data, and so the only way I found to get around this problem is to reclassify the raster immediately after a raster has been created (for example through the application of raster operations). Using the Sextante-saga reclassification module and immediately i convert no data to -99999 value and this valued is suited for transparency. Needless to say how much this is annoying but now it seems that between version 1.8 and version 1.9 there is no continuity. I'll explain: Having dealt with a raster in version 1.8 as mentioned above, I would expect to (not) see no data in the version 1.9. instead it seems that the classification made with Ver. 18 is not recognized by ver. 1.9 and so it begins again. is it so, or I'm missing something? s. ps: please open attached raster with 1.8 and 1.9 1.8: colormap, three classes 1.9: singleband pseudocolor, three classes please see, how "no data" in 1.9 don't disappear http://osgeo-org.1560.n6.nabble.com/file/n4993536/OK_iso_2_50anos.tif OK_iso_2_50anos.tif -- View this message in context: http://osgeo-org.1560.n6.nabble.com/raster-in-qgis-1-8-and-1-9-tp4993536.html Sent from the Quantum GIS - Developer mailing list archive at Nabble.com. _______________________________________________ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer