Hi all.
I'm working with spgrass6 R module, and I found that spplot() is
horribly slow (several *minutes* for a 5k cell raster). Is this a
common, known problem, or a local one?
Thanks.
--
Paolo Cavallini
See: http://www.faunalia.it/pc
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On Wed, Feb 22, 2012 at 9:17 AM, Paolo Cavallini cavall...@faunalia.it wrote:
Hi all.
I'm working with spgrass6 R module, and I found that spplot() is horribly
slow (several *minutes* for a 5k cell raster). Is this a common, known
problem, or a local one?
I am afraid that it is a generic R
Il 22/02/2012 10:38, Markus Neteler ha scritto:
I am afraid that it is a generic R problem.
Other example: While GRASS made a PCA in 1-2 min on a set of three radar
maps I had to kill R after 20min because I got impatient...
OK, I see, thanks. Are R devs aware of this? Should we open tickets?
On Wed, Feb 22, 2012 at 11:32 AM, Paolo Cavallini cavall...@faunalia.it wrote:
OK, I see, thanks. Are R devs aware of this?
I guess so but..
Should we open tickets?
... no idea, perhaps grass-st...@lists.osgeo.org would be the right place to
discuss this issue.
Markus
As opposed to GRASS, R has not been designed
with computational and/or memory efficiency as a priority.
It has its limits when dealing with large datasets
(not only GIS datasets).
Maybe your analysis would allow you to run your
computations on a representative sample instead
of the whole
Il 22/02/2012 12:21, Benjamin Ducke ha scritto:
As opposed to GRASS, R has not been designed
with computational and/or memory efficiency as a priority.
Oh! I was not fully aware of this.
Maybe your analysis would allow you to run your
computations on a representative sample instead
of the
Have you tried a plotting function that is more
efficient for gridded R data? Perhaps plot() from
the raster package?
I think this is rather a question for the R
mailing list, though.
Ben
On Wed, Feb 22, 2012, at 13:02, Paolo Cavallini wrote:
Il 22/02/2012 12:21, Benjamin Ducke ha scritto:
Greetings
Thanks Markus and Milton for your help But...
Imagine that I'm running a GRASS Script with Module, and all GRASS
functions. How can I integrate it in there? I mean, the user selects a
raster and How can i use that input to run a Script that calls R? That is my
question. Because I can
Greetings
Thanks Markus and Milton for your help But...
Imagine that I'm running a GRASS Script with Module, and all GRASS
functions. How can I integrate it in there? I mean, the user selects a
raster and How can i use that input to run a Script that calls R? That is my
question. Because I can
Good Morning
I need to do something similar to what Neteler/Mitasova do in their book
with spgrass6 and R. Since I will have to perform this a couple of times I
want to build a simple Script with input/output GUI. But I have never seen a
GRASS Bash script that calls R and spgrass6. So my question
Hi Gilbert,
There ist more than one way. I will tell you the way that works for me:
0. Be sure your Rgui.exe are in the windows path like
C:\Program Files (x86)\R\R-2.9.0\bin
1. Start grass/MSYS (sorry, I am on windows).
2. Connect to you mapseet
3. inside MSYS shell type:
Rgui.exe
4.
On Fri, Apr 16, 2010 at 11:21 AM, Gilbert Ferrara
gilbertferrara1...@gmail.com wrote:
Good Morning
I need to do something similar to what Neteler/Mitasova do in their book
with spgrass6 and R. Since I will have to perform this a couple of times I
want to build a simple Script with input/output
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