Dear Bastien,
the %over% method was primary written to work, and it seems that it did.
It is hard to tell why ArcGIS is so much faster without access to its
source code, and your data. Chances are that it uses a spatial index,
and R does not.
Talking about spatial indexes, you might want to try
Hello List,
I am having trouble getting rgdal to load, and was hoping you could assist.
When I execute the following library() command:
>library("rgdal", character.only=TRUE)
I get a windows pop up message saying:
Rgui.exe - Unable To Locate Component
This application has failed to start becau
You are right, I've download it and gdalinfo indicates a jpeg. It's
weird because the file I upload is a real tif, could it be that it
gets automatically modified?
Anyway, I attach the tif to another message for you.
The original file is jpeg. Then I use imageJ to change it to "8 bit
color" (this
Hi Chuck,
the error message suggests that the function unsuccessfully tries to
write a character string into the output file. Are you applying
randomforest to a classification problem or a regression problem? If
classification, are you predicting probabilities of class membership, or
classes
Thank you very much Oscar.
That works.
Manuel
2012/2/27 Oscar Perpiñán Lamigueiro
> Manuel Spínola writes:
>
>
> >> library(raster)> library(rasterVis)> r = raster(jabali$map)> p =
> gplot(r) + geom_tile(aes(fill = value)) + geom_point(loc, aes(X,Y))Error:
> ggplot2 doesn't know how to deal w
Despina,
Please see
http://cran.r-project.org/web/packages/adehabitatHR/index.html
There you will find a rich set of tools that may address your problem
and that may be readily referenced in a methods section.
Best Wishes-
-
Tony Fischbach, Wildlife Biologist
Walrus Research Program
Alaska
Manuel Spínola writes:
>> library(raster)> library(rasterVis)> r = raster(jabali$map)> p = gplot(r) +
>> geom_tile(aes(fill = value)) + geom_point(loc, aes(X,Y))Error: ggplot2
>> doesn't know how to deal with data of class uneval
>
> I can plot the map, but I can get to plot the points on the
Dear geo-list,
I'm just starting using R and the rgdal package to manage and create some
shapes and I am hitting some speed issues while using the %over% function. R is
significantly slower than ArcGIS.
Here is what I'm doing (I've shorten the code to make it easier to follow, I
don't expect i
On 02/27/2012 11:32 AM, gregor.hochsch...@gmx.de wrote:
> Hi, I am trying to install rgdal on a server without root access. I managed
> to compile proj.4 and gdal from source placing them in ~/libs using DESTDIR
> in make install. I am unable, however, to install rgdal using this command:
>
> R C
Hi,
I have a few thousand polygons I need to plot on a map (with different
colors). It is the colored areas of the polygons that matter, not the
border lines. However, as most polygons are quite small, the black borders
dominate the plots and hide the colors of the areas.
I use RGoogleMaps like t
On Mon, Feb 27, 2012 at 11:49 AM, Agustin Lobo wrote:
> Thanks Vikram,
>
> But that would be a multiband image, not a pseucolor image. I need
> a single layer image including its colortable in the same file (i.e. a
> temperature field
> represented in color such as
> https://sites.google.com/site/
Thanks Vikram,
But that would be a multiband image, not a pseucolor image. I need
a single layer image including its colortable in the same file (i.e. a
temperature field
represented in color such as
https://sites.google.com/site/filestemp2/home/pseudocolorv2.tif ).
Regards,
Agus
El día 27 de f
Hi, I am trying to install rgdal on a server without root access. I managed to
compile proj.4 and gdal from source placing them in ~/libs using DESTDIR in
make install. I am unable, however, to install rgdal using this command:
R CMD INSTALL --configure-args='
--with-gdal-config=~/libs/gdal/usr/
Hello Agus,
Have you tried writeRaster() command from raster package?
I have tried it and it works wonderfully. I have tried it like this
octstack<-stack(croctb1,croctb2,croctb3,croctb4,croctb5,croctb7)
writeRaster(octstack,"H:/../map_oct.tif", overwrite=T)
you can also write *.img and a numbe
Hello,
I'm very new in working on R and maybe that's a simple thing I'm trying to
do, but I am really stuck.
I have a data point set of animal tracking coordinates and I have
implemented a kernel utilization distribution analysis in order to find the
home range for 95% of the relocation data.
On 02/27/2012 10:22 AM, Paul Hiemstra wrote:
> On 02/26/2012 08:24 PM, Hodgess, Erin wrote:
>> Hi R Sig Geo People:
>>
>> May I ask an ArcGIS question here, or should I try to find an ArcGIS group,
>> please?
>>
>>
>>
>> Erin M. Hodgess, PhD
>> Associate Professor
>> Department of Computer and Mat
On 02/23/2012 04:48 PM, marion le texier wrote:
> Hi everyone,
>
> I would like to know if someone of you has already got troubles when trying
> to use ggplot2 with a shape file?
> Here is what I've done:
>
> NUTS1<-readShapeSpatial("nuts1_2003",
> proj4string=CRS(projargs=("+init=epsg:3035")),I
On 02/26/2012 08:24 PM, Hodgess, Erin wrote:
> Hi R Sig Geo People:
>
> May I ask an ArcGIS question here, or should I try to find an ArcGIS group,
> please?
>
>
>
> Erin M. Hodgess, PhD
> Associate Professor
> Department of Computer and Mathematical Sciences
> University of Houston - Downtown
> m
Dear Toni & Tomislav and listers,
You can find downscaled high resolution climatic variables from Spain and
Portugal (Iberian Peninsula) 200m with 50 year controled quality stations.
Find more information on methods and maps server @
http://opengis.uab.es/wms/iberia/en_index.htm. Climatic data can
Hi,
At our department we are using LiDAR data for many different purposes. To
simplify import into R one of my colleagues are working on a R package that
allows the use of the C++ libLas library from within R. It is still under
(early) development, but it compiles under Linux and MacOS and allo
DearTomislav,
Thank you very much for your help.
Toni
- Original Message -
From: "Tomislav Hengl"
To:
Sent: Sunday, February 26, 2012 3:40 PM
Subject: Re: [R-sig-Geo] spanish environmental variables map and krige
On 25/02/2012 01:11, Toni Monleon wrote:
Hi All,
I' d like to
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