OK. I will do 2020-09-21 18:31 GMT+02:00, edgar.sol...@web.de <edgar.sol...@web.de>: > On 21.09.2020 17:19, Giuseppe Aruta wrote: >> Hi Ede, >> it works fine. I was able to cut a selected part of the image. And also I >> tested on some simple tools form Sextante that generate raster (Rasterize >> a vector layer, change no data value..). >> Let us wait for Roberto's test. I think that it is fixed. Also it is nice >> to reduce time raster display reusing a renderedOp cache mapping. > > yeah let's wait. anyway please advice him to use "-v trace" for delivering > log messages. note that it is not debug but trace which is the most > talkative setting. > >> The "colors" look different because a dem raster, with only one band, is >> painted using a set of grey values between black and white for each cell >> value. Those values are defined by the range of the cell values. The >> partial raster generated by the extracting tool has, of coarse, a >> different range of values compared to the original dem. That's why the >> different greys. >> It is a way to graphically represent a group of datas (generally elevation >> but also slope values, quantity of rain, insolation, etc) distributed (or >> better reconstructed) as a grid on a surface. >> Of course we can change the color schema (via Layer tree, Raster Style) >> and we can omologate two rasters, with different ranges of values to the >> same color schema (saving a color schema of one and importing it into the >> second, always using via Layer tree, Raster Style). > > make total sense when explained like that :) > >> ..... >> Very good job, Ede! I think, if no other problem came from Sextante tools >> (and Roberto agree), this version will be used in the course. > > let's wait and see. > > homework for you is porting needed functionality from TiffUtils to > TiffUtilsV2, so that in the end TiffUtils can be removed and only > TiffUtilsV2 remains essentially wrapping GeoReferencedraster functionality. > > ..ede > > > _______________________________________________ > Jump-pilot-devel mailing list > Jump-pilot-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >
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