[GRASS5] Re: [GRASSLIST:2848] Re: import raster
glynn.clements at virgin.net
Mon Mar 8 15:28:37 EST 2004
Markus Neteler wrote:
> > > > I've a problem importing some raster:
> > > > I use r.in.gdal to import a raster and the results are files over 100 mb for
> > > > every raster.
> > > > With r.compress I reduce to 17,4 mb.
> > > > Is there a method to reduce again these files?
> > > > I think that GRASS take the raster as a 8 bit image while the original is
> > > > black and white (1 bit)
> > > Anything to improve in r.in.gdal (we all like small files)?
> > If the file is being compressed, the underlying format (1/2/4 bytes)
> > won't make much difference.
> > The only way to get any significant reduction in the file sizes would
> > be to use zlib (or similar) rather than RLE compression.
> Do you refer to CELL type only? For FCELL/DCELL deflate should
> be used aready, right?
Glynn Clements <glynn.clements at virgin.net>
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