[GRASS5] r.rescale range question

[Andreas Lange]

Hi,

Markus Neteler schrieb:
> 
> On Fri, Nov 09, 2001 at 02:39:36PM +0000, Glynn Clements wrote:
> >
> > Markus Neteler wrote:
> >
> > > while looking at r.rescale I found
> > >
> > >  r.rescale [-q] input=name [from=min,max] output=name [to=min,max]
> > >    [title="phrase"]
> > >
> > > [...]
> > >       to   The output data range
> > >            default: 1,255
> > >
> > > This range looks a bit unusual. Shouldn't it be 8bit = 0..255?
> >
> > I would guess that it's a leftover from when zero was null.
> >
> > Personally, I would suggest just making the "to" option mandatory. I
> > can't see why 255 is any more suitable as a default than any other
> > value.
> 
> Thanks for all suggestions. I have updated module and html page
> making the "to" option mandatory.

But that is only true if we do not implement the -z flag which changes
to zero (0) for null values. 
Please look in the RT and my other mails on the problems with r.reclass.
I am lost with the problem in r.reclass somehow. Would appreciate any
help with that. 

cu,

Andreas
-- 
Andreas Lange, 65187 Wiesbaden, Germany, Tel. +49 611 807850
url: http://mitglied.tripod.de/AndreasLange
mail: Andreas.Lange_at_Rhein-Main.de - A.C.Lange_at_GMX.net