Hi, If I use gdal_contour (in QGIS/processing) to generate contours of a rasterset you get a call like:
gdal_contour -b 1 -a ELEV -i 0.0001 -f "ESRI Shapefile" /tmp/smoke.asc /tmp/OUTPUT.shp The column ELEV will contain the contour 'height' But when using the -p option (to create polygons instead of lines) this column ELEV is just empty. Is this a bug? Or suppoosed to be... if you want to create labels it would be handier if this column is filled. Another thingie: When using interal values like above (0.0001) the contours *look* ok, but the values in the dbf/shp file all show 0.001 ?? But when you do output a geopackage gdal_contour -b 1 -a ELEV -i 0.0001 -f "GPKG" /tmp/smoke.asc /tmp/OUTPUT.gpkg The values are OK (well, showing 0.0011 and 0.00090000000 so 'precision' is handled a little strange...), also when you use 1.0E-4 or 1.00000E-4 Is this something because it is supposed to work with values > 1? In this case it is modeloutput: a cloud so very small values... Thanks for any info, And let me know if this is worth creating one or two? issues. Wanne play/try? http://duif.net/temp/smoke.zip is an example epsg:4326 raster smoke plume. Regards, Richard Duivenvoorde _______________________________________________ gdal-dev mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/gdal-dev
