[STATSGRASS] [R-spatial-devel] speed of GRASS/R interface

Cesare Furlanello furlan at itc.it
Mon Oct 15 09:14:27 EDT 2007


Hi Markus / Roger
is this upgrade being propagated to the R CRAN repository?
-- cesare


-----Original Message-----
From: statsgrass-bounces at grass.itc.it [mailto:statsgrass-bounces at grass.itc.it] On Behalf Of Markus Neteler
Sent: lunedì 15 ottobre 2007 14.58
To: statsgrass at grass.itc.it
Subject: Re: [STATSGRASS] [R-spatial-devel] speed of GRASS/R interface


Today I downloaded 'sp' and 'spgrass6' from CVS (http://r-spatial.sf.net/),
steps here to enable more people to try:

# use empty password == <enter> key:
cvs -d:pserver:anonymous at r-spatial.cvs.sourceforge.net:/cvsroot/r-spatial
login
# fetch classes:
cvs -z3
-d:pserver:anonymous at r-spatial.cvs.sourceforge.net:/cvsroot/r-spatial co -P
sp
cvs -z3
-d:pserver:anonymous at r-spatial.cvs.sourceforge.net:/cvsroot/r-spatial co -P
spgrass6

# install from the same directory:
R CMD INSTALL sp
R CMD INSTALL spgrass6

Then I tried the new classes: INCREDIBLY FAST!

Seems that I can now start working with my satellite data
in R - thanks for this speedup!

best wishes,
Markus


guano wrote:
>
> It took about 6 seconds to read a raster with 2200x2500 cells, and
> about 3 secs to build a truehist().
>
> don't have any categorical map, though.
>
> Carlos
>

--
View this message in context: http://www.nabble.com/speed-of-GRASS-R-interface-tf4555475.html#a13212226
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ITC -> dall'1 marzo 2007 Fondazione Bruno Kessler
ITC -> since 1 March 2007 Fondazione Bruno Kessler
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