[GRASS5] Re: [STATSGRASS] kriging, R and GRASS

Markus Neteler neteler at itc.it
Mon Jan 17 09:44:10 EST 2005


(cc grass5)

On Mon, Jan 17, 2005 at 02:37:44PM +0100, Roger Bivand wrote:
> On Mon, 17 Jan 2005, Roger Bivand wrote:
> 
> ... and also wanted show that rastput() would scale well to much finer
> grids - which it does - and found a bug in rastput() and other functions
> that has led to the layer being written to the GRASS database with the
> wrong window if system("g.region ... ") is used. This is the same bug that
> affected gmeta() until Bodo Ahrens found it 18 months ago. The problem was
> that the GRASS library function tries to be too clever (I think disk
> access was very slow when it was written), and stores a local version of
> the data in memory in a cache of sorts. It does not check, though, whether
> the data on disk have changed - it just returns the cached values! Using a 
> lower-level function, and conditionally altering G__init_window () seems 
> to have fixed it. The new version should reach CRAN soon.

Roger,

is there any change which should go into GRASS-CVS?

Markus

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