Hello,
I am trying to compare the zscores of using various kriging methods with
inverse distance weighting.
When I run
crossval_idw - krige.cv(Prec00hr~1, DataCoordhr, nfold=2)
I get all NA's for the zscore. As the residual is a valid number, I am assuming
that the standard deviation is not
I have a 3d SpatialGridDataFrame I created using krige (IDW). I am
using rgl facilities to create an interactive plot of the points, but
I'd really like to have something more volumetric than points. My copy
of the truly wonderful Applied Spatial Data Analysis with R (shameless
pander) is
On Wed, Dec 9, 2009 at 1:22 AM, rusers.sh rusers...@gmail.com wrote:
Hi all,
Does anybody know how to import a KML file in R and them save it as a
shape or CSV file. Take the following KML file as an example,
http://www.nature.com/nature/googleearth/avianflu1.kml
I have tried several
Dear R-Geographers,
I am trying to use the GSHHS shoreline data for annotating my maps.
I used Rgshhs() from the package maptools to import it into R as a
Spatial object.
However it seems that there is a problem due to the new version of
gshhs_2.0.zip.
In the help gshhs_1.11.zip is referred.
Hopefully there is a simple solution to this problem. I process really large
satellite images in R and, in order to not offend the memory-limitation
demi-gods, I open each row of the imagery one at a time, process it, write the
results, and then open the next line. I use readBin() to open each
On Wed, Dec 9, 2009 at 4:58 PM, Jonathan Thayn jth...@ilstu.edu wrote:
Hopefully there is a simple solution to this problem. I process really large
satellite images in R and, in order to not offend the memory-limitation
demi-gods, I open each row of the imagery one at a time, process it,
Mark,
If spgdf is a SpatialGridDataFrame object
# install.packages(raster, repos=http://R-Forge.R-project.org;)
library(raster)
plot3D(raster(spgdf))
Or you can have a look at the code:
getMethod(plot3D, 'RasterLayer')
Robert
On Wed, Dec 9, 2009 at 5:10 AM, Mark Connolly mark_conno...@acm.org
Dear Garcia,
Thank you so much! Before running my data, I have tested your code using
meuse data. It works fine. But it produce following output like below
from V1 to V3103. I do not understand what does the values in rows mean
(1 to 4). Here is the code that I used. I have questions How do
I _think_ raster may be solving a different problem. I am looking for a
voxel-type raster. Let me know if I am wrong.
plot3d(raster(kriged_sp))
Error in as.double(x) :
cannot coerce type 'S4' to vector of type 'double'
Let me describe the SpatialGridDataFrame a bit better. The coordinates
On Wed, Dec 9, 2009 at 6:20 PM, rick reeves ree...@nceas.ucsb.edu wrote:
Hello All:
Faced with a similar challenge, and NOT wanting to resort to writing a C
language function
employing fseek(), I just used two readBin calls: One to read (and
implicitly discard) data up
to the spot I actually
On Wed, 9 Dec 2009, Maik Renner wrote:
Dear R-Geographers,
I am trying to use the GSHHS shoreline data for annotating my maps.
I used Rgshhs() from the package maptools to import it into R as a
Spatial object.
However it seems that there is a problem due to the new version of
gshhs_2.0.zip.
In
David Rossiter runs this excellent distance education course:
http://www.itc.nl/Pub/Study/Courses/C10-AES-DE-02
*Next one starts in 6 weeks!
We will run a 5-day trainig course in June (which is more affordable,
but shorter):
27 June - 4 July 2010, GEOSTAT 2010 Summer School for PhD
If you can read the whole file at once it might be better to push the
results into a matrix for indexing in R. This could also be useful for
reading chunks of the file, and processing in parts. seek is fine but
if you are moving around for three values each read it will be slow.
If the
It is the problem of the file. I should have thought of this because i
have tried several tools. Thanks.
Based on your replies, i think it is easy to convert the files between KML
and SHP if the files are correct and have simple structure. We only
need readOGR and writeOGR in rgdal package to
Almost, in my sleepiness I left out an important part from that pseudo
code. You need to store the data in a variable/object and then write it out.
importeddata - readOGR(pathtofile,layer.kml)
writeOGR(importeddata ,pathtooutput,driver=ESRI
Shapefile,layer=output.shp)
Make sure to read the help
On Wed, 2009-12-09 at 11:46 -0500, Zia Ahmed wrote:
Thank you so much! Before running my data, I have tested your code
using meuse data. It works fine. But it produce following output
like below from V1 to V3103. I do not understand what does the values
in rows mean (1 to 4).
Here is the
Thank you so much! Before running my data, I have tested your code using
meuse data. It works fine. But it produce following output like below
from V1 to V3103. I do not understand what does the values in rows mean
(1 to 4). Here is the code that I used. I have questions How do I plot
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Hi Alexandre,
Greetings from yesterday evening.
I think I know what you want, and I've been working on the same problem
in a very different substantive context. To make sure I understand the
question, you are basically stating that if the gap between nearest
birds of the same species exceeds
On Thu, Dec 10, 2009 at 9:23 AM, Dan Putler dan.put...@sauder.ubc.cawrote:
Hi Alexandre,
Greetings from yesterday evening.
I think I know what you want, and I've been working on the same problem
in a very different substantive context. To make sure I understand the
question, you are
Niort
Phone +33 (0)5 49 09 96 13
Fax +33 (0)5 49 09 65 26
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