What I want is [1] and it becomes more complicated because the "Convert 1-band raster to 1-band paletted or 3-band RGB raster" plugin doesn't work with grayscale maps. Anyway, thanks for the answer.
> > Hi, > > On 17.05.2012 11:52, giannis Nj wrote: > > > I want to convert > a directory with .asc files to .tiffs, but I need the output files to > have the same colour analysis, as when they are already loaded in qgis > display. I try Raster->Conversion->Translate (Convert format) but it > gives each file with different colours. Is there any other way to make > it? Maybe a batch convert somehow after the files are loaded on > screen? > > (1) Do you want to embed the colour table into the tiff files? > Or > > (2) Do you want to carry over (keep) the 'true' values of the asc > files in the tiff files? > > Answer for (2): > > If you want to keep the > true values, then I suggest that you save a .qml file (raster properties > -> Save Style...) for each .asc file displayed in QGIS (use the same > filename as the asc file). Then, use the same file name for the tiff > files as well, and put them in the same folder as the qml files and open > them in QGIS. > > e.g. file1.asc -> file1.qml, then convert "file1.asc" to > "file1.tiff" and make sure both .tiff and .qml files are in the same > folder. > When you load the .tiff file in QGIS it will also load the style > from the .qml so that the .tiff and .asc files will display identically. > > > Note: to save a full bunch of qml at once you can use the "Save > default QML" plugin available from GIS-Lab repo at [0], or, > alternatively, the "Save QML" plugin available from [2]. > > Answer for > (1): This is far more complicated! > > Two leads to possibly solve this > problem: > > - Tim Sutton's blog about using GDAL to embed colour table in > raster at [1]. > > - Use the "One-band raster to paletted or RGB" plugin > (V0.3.0) from this repo [2]. > See the help page at [3]. > > Anyway, you > will have to use scripting if you have many files to process. > > [0]: > http://gis-lab.info/programs/qgis/qgis-repo.xml > [1]: > http://linfiniti.com/2011/12/creating-coloured-rasters-with-gdal/ > [2]: > http://www.bc-consult.com/free/plugins.xml > [3]: > http://www.bc-consult.com/free/bccAddRColor.html > > HTH, > Benoit
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