[GRASSLIST:3962] Re: Some questions about 5.3 and r.cva
Paul Kelly
paul-grass at stjohnspoint.co.uk
Mon Jul 19 15:34:40 EDT 2004
On Mon, 19 Jul 2004, Benjamin Ducke wrote:
[...]
> However, if you get it to compile and install it still won't
> be very useful
I disagree---I have obtained very useful results with it using the
following work-arounds:
> because it is essentially GRASS 4.X code and
> does not handle floating point raster,
Multiply it by 100 or 1000 or whatever is convenient, prior to doing the
analysis
> GRASS 5 sites format
Use r.to.sites and a raster layer for your input sites
> or NULL values.
I don't recall that being a problem---can you convert them to zeros with
r.null though?
> I have done a conversion of r.cva to GRASS 5.0/3/7
> that works with floating point und NULL values and also
> uses the new sites format.
> I have tried to email Mark a while ago to ask him if I was
> allowed to distribute this updated version but got no
> reply so far.
>
> I am a bit reluctant to just publish his code without his
> expressed affirmation.
> I will try to contact him again about it and hopefully
> get a reply (Mark, do you read this -- please answer!).
I agree it would be really good to get r.cva into GRASS---it is a really
excellent module.
Paul
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