Hi, I noticed this question in gis.stackexchange https://gis.stackexchange.com/questions/305641/gdal-doesnt-create-contours-for-the-whole-raster?noredirect=1#comment493737_305641 and now I wonder
1) If gdalinfo reports NoData Value=3.4028234663852886e+38, why gdal_contour does not accept the value as -snodata but user needs to know to use "inf"? 2) If user asks gdal_contour to create intervals of 1 m from 20 to 3.4028234663852886e+38, wouldn't it be better to ask "Are you sure?" or error out before starting a process that will for sure fail? I guess that in most cases users do not really want more than 1000 contour levels. -Jukka Rahkonen-
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