[GRASSLIST:4153] installing GRASS50pre5 from source with optios

[Thomas Dewez]

Hi everyone

I just downloaded the pre5 version as suggested by Markus. Unfortunately I
am not very fluent in the Unix world. I managed to untar and unzip the
archive in a folder. In my previous version of GRASS I always wanted to have
GDAL up and running as well as TCLTK (proper to GRASS to prevent bugs, Glynn
said that was important) and the R extension.

In what order should I proceed?

GDAL, I have downloaded the package and compiled it in a folder
TCLTK where do I get it? does it come with the GRASS source?
R extension, I have R 1.4.1 for windows. Does that work too or should I put
the cygwin/unix version of R.

As always thanks for your help.

Thomas

----- Original Message -----
From: "Markus Neteler" <neteler at itc.it>
To: "Thomas Dewez" <thomas.dewez at brunel.ac.uk>
Sent: Thursday, July 25, 2002 4:36 PM
Subject: Re: [GRASSLIST:4019] adding a field from raster image to existing
site data


> On Thu, Jul 04, 2002 at 11:42:07AM +0100, Thomas Dewez wrote:
> > Dear all,
> >
> > My project is moving on thanks to your help. The next question I'd have
is
> > to interpolate a DEM for which I have these information:
> > 1. irregularly spaced Z stored in an raster map (2.5 million data
points!)
> > 2. corresponding precision for Z posts in a second raster image.
> >
> > Are site coverages the only sources that I can feed to s.surf.rst or can
I
> > interpolate a spline with tension directly from a raster map? By the
way,
> > are sites map plain ASCII files?
> >
> > If site coverage is the only solution, then how can I combine both
raster
> > map inside a single site map? I want to use the precision image as the
> > "smoothing attribute" of the interpolation. So how do I make the
precision
> > raster map become attribute 2 of the sites?
> >
> > Finally, s.surf.rst is extremely CPU intensive. What are the "cooking
> > tricks" to use to speed up/avoid slowing down the process?
>
> which version do you use? s.surf.rst is 2600% faster since
> GRASS 5.0.0pre4
>
> just to let you know.
>
>  Markus
>