Thanks Roger. I do have acces to them. I will check it out tomorrow.
Carlos
On 3/8/06, Roger Bivand <Roger.Bivand@nhh.no> wrote:
On Wed, 8 Mar 2006, Carlos "Guâno" Grohmann wrote:
> On 3/8/06, Roger Bivand <Roger.Bivand@nhh.no> wrote:
> Roger, could you give the full reference, so I can check out ?\item{Burrough, P. A. and McDonnell, R. A. 1998 \emph{Principles of
geographical information systems.} (Oxford: Oxford University Press).}\item{Zevenbergen, L. W. and Thorne, C. R. 1987 Quantitative analysis of
land surface topography. \emph{Earth Surface Processes and Landforms}, 12,
pp. 47--56.}Roger
>
> thanks
> Carlos
>
>
> >
> > You can use the Zevenbergen and Thorne (1987) recipe given by Burrough and
> > McDonnell, 1998, p. 191 - do you have access to that? You do r.mapcalc
> > using raster array indexing to make 8 shifted arrays, then more r.mapcalc
> > to get slope, aspect, plan and profile curvature.
> >
> > Roger
> >
> >
> > >
> > > thanks
> > >
> > > Carlos
> > >
> > >
> > > --
> > > +-----------------------------------------------------------+
> > > Carlos Henrique Grohmann - Guano
> > > Geologist M.Sc - Doctorate Student at IGc-USP - Brazil
> > > Linux User #89721 - carlos dot grohmann at gmail dot com
> > > +-----------------------------------------------------------+
> > > _________________
> > > "Good morning, doctors. I have taken the liberty of removing Windows
> > > 95 from my hard drive."
> > > --The winning entry in a "What were HAL's first words" contest judged
> > > by 2001: A SPACE ODYSSEY creator Arthur C. Clarke
> > >
> >
> > --
> > Roger Bivand
> > Economic Geography Section, Department of Economics, Norwegian School of
> > Economics and Business Administration, Helleveien 30, N-5045 Bergen,
> > Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
> > e-mail: Roger.Bivand@nhh.no
> >
> >
>
>
> --
> +-----------------------------------------------------------+
> Carlos Henrique Grohmann - Guano
> Geologist M.Sc - Doctorate Student at IGc-USP - Brazil
> Linux User #89721 - carlos dot grohmann at gmail dot com
> +-----------------------------------------------------------+
> _________________
> "Good morning, doctors. I have taken the liberty of removing Windows
> 95 from my hard drive."
> --The winning entry in a "What were HAL's first words" contest judged
> by 2001: A SPACE ODYSSEY creator Arthur C. Clarke
>--
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand@nhh.no
--
+-----------------------------------------------------------+
Carlos Henrique Grohmann - Guano
Geologist M.Sc - Doctorate Student at IGc-USP - Brazil
Linux User #89721 - carlos dot grohmann at gmail dot com
+-----------------------------------------------------------+
_________________
"Good morning, doctors. I have taken the liberty of removing Windows
95 from my hard drive."
--The winning entry in a "What were HAL's first words" contest judged
by 2001: A SPACE ODYSSEY creator Arthur C. Clarke