[GRASSLIST:3597] problems with grass 5.0.0pre3

[andriy at volja.net]

I am using Red Hat 7.2 and I have recently installed
the newest version ofgrass (5.0.0.pre3). The problem I have encountered is
how to reclass NODATA in raster files into numerical values that could
be used to perform someuseful calculations. The problem is that I cannot use
any mathematicaloperations when NO DATA is present and I cannot manage
to reclass that. Itried r.reclass but it did not help.

The other problem occurs when I am importing dxf and
tiff file formats. Thewhole map contains only NO DATA (tiff) or 0 (dxf). I
ran v.support andg.region, the map displayed correctly but was useless
for any furtheranalysis. I couldn't reclass that dxf either.

I am rather new at Grass so these might seem dumb
questions, but theyreally make my life with grass rather difficult.

Thanks in advance, andriy.