id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc 2107,ASCII grid disregards nodatavalue when choosing data type,asgerpetersen,Mateusz Łoskot,"When choosing the data type for an ascii grid the driver doesn't care about the no data value which can lead to very wrong results. Short example: The grid {{{ ncols 2 nrows 2 xllcorner 500000.00 yllcorner 6100000.00 cellsize 1 nodata_value -999999 39 13 -999999 22 }}} returns the following statistics from gdalinfo -stats: {{{ Band 1 Block=2x1 Type=Int16, ColorInterp=Undefined Minimum=-32145.000, Maximum=39.000, Mean=-12263.000, StdDev=13410.683 NoData Value=-999999 Metadata: STATISTICS_MINIMUM=-32145 STATISTICS_MAXIMUM=39 STATISTICS_MEAN=-12263 }}} I think it should be possible to use a nodatavalue which is well outside the domain of the data values. So, in the above case the driver should choose GDT_Float32 from looking at the nodatavalue alone. This would have the nice side effect, that it makes the complete file scan unnecessary in cases like this.",defect,closed,normal,1.5.1,GDAL_Raster,svn-trunk,normal,fixed,AAIGRID type statistics,warmerdam