Hi there,
I'm a newie in using R to make maps... I used to work with ArcGis but I ran
out of a valid license...
I'm trying to crop the future Worldclim datasets layers which are huge
ascii files (of the whole world at 1km resolution, so they are between
3-4GB each) to the extent of Mexico using
Have you considered updating your R and associated packages?
There's also a plethora of other GUI based GIS systems. Just the other day,
I found Quantum GIS to be very user friendly.
That being said, I suggest you use R. :)
Cheers,
Roman
On Thu, Jul 18, 2013 at 9:05 AM, Rocio Ponce
Hello All,
This must be a simple mistake but I'm trying to get information for few points
of 10.000 raster files (TIFF) into a table. If I do it individually, I get the
real values for each individual raster. But if I do it using stack (see
below), I get the correct values only for the first
On 07/18/2013 09:26 AM, Roman Luštrik wrote:
Have you considered updating your R and associated packages?
As Roman mentioned, I also suggest you, as first step, to update R (and
all the packages) up to version 3 or higher, because one of the
significant user changes introduced in R 3.0.0 was
Hi,
Also, see maptools::elide which gives some functions for that.
You could take some material from this git if you want:
https://gist.github.com/datagistips/5262410#file-cartograms-r
with 2 functions: one using buffer, another one using elide
best,
mathieu
2013/7/17 Rizzo, Michael
Dear all,I try to plot a raster map with a correct colour key using spplot. But the minimum seems to be smaller than the data minimum in the colour key.
I use the following code:## Summary of raster map
summary(slope.grid)Object of class SpatialGridDataFrameCoordinates:
min max
x 76165.36
Thank you Mauricio,
I solved the problem working with tif files instead of grd files. I don't
know why but that solved the problem, now the ascii file keep the values of
the tif file.
Manuel
2013/7/18 Mauricio Zambrano-Bigiarini mauricio.zambr...@jrc.ec.europa.eu
On 07/13/2013 01:44 AM,
Hello, I am new to spatial stats and I was wondering what is the difference
between a CAR and a BESAG model. BYM is equal to BESAG?
sorry I am not a statistician
--
View this message in context:
http://r-sig-geo.2731867.n2.nabble.com/CAR-vs-BESAG-tp7584180.html
Sent from the R-sig-geo mailing
Rocio,
You should not use functions read.asc and raster.from.asc because they
read all the values into memory. Also please indicated which packages
you use. The below should fix the problem:
setwd('G:/future_A2a/2020/bccr_bcm2_0_sres_a2_2020s/')
library(raster)
Diego,
To check what extract does you should look at what it returns! Your
object rasValue in this case.
Then it should be easy to understand that the mistake is here:
combine=cbind(points,rasValue)
You can fix it like this:
combine=cbind(coordinates(points), rasValue)
Robert
On Thu, Jul 18,
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Dear Ulrich, please try the at argument of spplot; see the following
example on lattice::levelplot, for which spplot is a front-end:
xy = expand.grid(x=1:10,y=1:10)
xy$z = runif(100)
library(lattice)
levelplot(z~x+y,xy)
Dear all,
Thank you a lot for your suggestions!
(In my email forgot to say which packages I was using... I used raster and
SDMTools)
I upgraded R packages to the newest version and I'm running the code that
Robert suggested. It has been running for almost 4 hours now (there are 8
huge files
Dear All,
Consider yield as attribute and easting and northing in meters as spatial
coordinates.
I used gls function of nlme package because of spatial dependency of the
residual. I tried to remove large-scale trend by using the easting and
northing as covariates of yield.
Dear all,
I have another question or problem -- this time it is related to the
transformation of a Spatial Lines shapefile into a raster.
Let me describe my problem: I want to construct a measure of travel distance
from A-B; I have obtained a shapefile of the highway network of the US; in
14 matches
Mail list logo
