[gdal-dev] gdal_translate takes negative values as an option (?)

[Ivan Lucena]

Hi there,

I tried to re-scale some of the values of a image just like this one here:

$ gdalinfo in.tif
...
  Minimum=2401.740, Maximum=2936.040, Mean=2685.227, StdDev=125.518
  NoData Value=-3.4e+38

By using the -scale option in gdal_translate:

$ gdal_translate in.tif out.tif -scale -3.8e+38 0 0 0 -a_nodata 0
Option -3.8e+38 incomplete, or not recognised.

But it seems like the "-" was interpreted as the beginning of an option.

That happens at that line of code here:

http://trac.osgeo.org/gdal/browser/trunk/gdal/apps/gdal_translate.cpp#L457

It looks like a bug but it might have some other implications that I can't see.

Other parameters, like -a_ullr, doesn't have that problem because the values are not optional as in -scale.

Any suggestion?

Regards,

Ivan