Pascal,
I see that names are written to file if (1) the cell values are in memory
(not, as in your case on file) or (2) if you write a RasterBrick (not as in
your case a RasterLayer). Bug fixed in next version.
Work-arounds:
1) write a RasterBrick instead of a RasterLayer
names(x) <- 'zebra'
x <
have a look at my blog. i solve the problem using the big memory package.
there are a couple ways to speed it up but you can just download my code.
On Oct 26, 2012 11:46 AM, "Wouter Steenbeek" wrote:
> I am trying to use the "gDistance" from the "geos" package to calculate
> the Euclidean distanc
About 15.5 seconds here. This is awesome, thanks!!
From: Roger Bivand [roger.biv...@nhh.no]
Sent: Friday, October 26, 2012 11:47 PM
To: Wouter Steenbeek
Cc: r-sig-geo@r-project.org
Subject: Re: [R-sig-Geo] gDistance on a LARGE Spatial Object?
On Fri, 26 O
On Fri, 26 Oct 2012, Roger Bivand wrote:
On Fri, 26 Oct 2012, Wouter Steenbeek wrote:
Disregarding solution1 (;-)), let me give you a practical example where I
(think I) really need the full matrix. Or more specifically, an example in
which I use the function gWithinDistance (but the same mem
On Fri, 26 Oct 2012, Wouter Steenbeek wrote:
Disregarding solution1 (;-)), let me give you a practical example where
I (think I) really need the full matrix. Or more specifically, an
example in which I use the function gWithinDistance (but the same memory
issues apply here).
I have a points.
Disregarding solution1 (;-)), let me give you a practical example where I
(think I) really need the full matrix. Or more specifically, an example in
which I use the function gWithinDistance (but the same memory issues apply
here).
I have a points.sp object containing my units of analysis (e.g.,
On 10/26/2012 08:46 PM, Wouter Steenbeek wrote:
> I am trying to use the "gDistance" from the "geos" package to calculate the
> Euclidean distance between a large number of points: to be exact, 28000
> points.
>
> I'm doing:
> distance <- gDistance(points.sp)
>
> R doesn't run this on my 32-
I am trying to use the "gDistance" from the "geos" package to calculate the
Euclidean distance between a large number of points: to be exact, 28000 points.
I'm doing:
distance <- gDistance(points.sp)
R doesn't run this on my 32-bit 3Gb RAM machine. The same function works on a
subset of these
Noticing an unwelcome similarity between writeRaster and projectRaster:
https://stat.ethz.ch/pipermail/r-sig-geo/2012-October/016523.html
> Here I show the raster object, I then define the name, and then I
> write it to disk. You can see that the layer name switches back to
> "layer".
> > comb
>
Hi all,
I'm working with a set of rasters in R, and writing them to disk. However,
when I read them back in, the layer name is back to default. How can I
define the layer name and have that carry over to the raster that is saved
to disk?
I'm using R 2.15.1, raster package 2.0-12, Mac OSX Mountain
Hi,
For point /1 use this command:
library(rgdal)
image <-
"E:/IRDA/Automatisation/ScriptDevelopment/data/PredictionProprietesSol/Ref_L5_2521_IBN7c.sdat"
info <- try(GDALinfo(image), silent = TRUE)
For point 2:
You need to add extension to your 't_codes.sgrd'.
rsaga.geoprocessor(lib="g
Dear list,
I am comparatively new to RSAGA and have come across three problems I
have not been able solve by searching on the internet. Your help would
be very much appreciated. This is SAGA 2.0.8 and R 2.15.1.
1. Is there a way to access the header of a *.sgrd without having to
load the wh
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