Search Archives

Does anyone know how to estimate via ML a conditional autoregressive model (CAR as in Cressie 1993) using R? Thanks Giovanna Jona Lasinio DSPSA University of Rome "La Sapienza"

When plotting results from a crossvalidation done via xvalid (in geoR) it is not clear the coloring code used for the coordinate plots. Can anyone clarify what corresponds to each color? (red and blue in my plots). Thanks Giovanna Jona...

Dear all, Is there any "simple" way to estimate an empirical crosscovariance function for space-time data? More precisely if I have n space locations in T times on which I observe one variable, I cannot find an already made...

Dear R helpers, I'm using R2.2 under windows XP professional on a Dell double processor workstation. I have a large (29Mb) workspace that I'm trying to load both, by double clicking and by direct load. The message...

Dear all, this may be a stupid question, but I wasn't able to find an answer in the FAQ and in the mail archive. I have a huge amount of data, 644 sites for 30 different times, which coordinates...

Dear all, I'm running a bayesian kriging using krige.bayes in the geoR library. I'm using a linux machine with R 2.4. I'm running a chain of annual surfaces estimation and I'm using every year...

Thanks, I'm looking at gstat and trying to understand in which way it is appropriate to add time as the third dimension... Indeed the "simple" attribute is not for space-time problems :-) -----Messaggio originale----- Da: Edzer J. Pebesma [mailto...

Dear all, thanks for the many suggestions, I'll try and let you know what worked best. Package fields works well in computing variogram's cloud with lon-lat coordinates (returns by default distances in miles) and usually I use...

Dear All, In the last few days I started using the last version of R as I encountered a problem with R1.9 and the use of RWinEdt, however the problem shows with R2.01 as well. More precisely 1...

Thanks for the explanation! I believe it would be very useful to document at least the color coding of plots in geoR, colors perception is very subjective, to me red is positive and blue negative, while in the plot.xvalid...

You may try the following site http://www.leti-messina.it/ and follow the link to Italia Lat/Long and UTM. This is useful if you already know the name of a village or town which corresponds to the region...

My interest in CAR is mainly didactic. I'm teaching spatial stat. and all applications are made with R. I believe it maybe useful for research and didactic purposes to have CARs implemented in R. I'll try to modify...

I'd be, of course, very interested! The problem I'm facing now involves data on the adriatic sea, but the final task is to build models of waves climatology for the entire mediterranean... I'd love to do that...

Thanks, at least this crazy behavior is not my exclusive problem :-) I think that if we understand how the OS operates when copying and pasting we may find a solution... -----Messaggio originale----- Da: Petr Pikal [mailto:petr.pikal at precheza...

I'm using R since version 1.6, and I didn't redefine plot in my workspace (I would never even dream of doing anything like that), I didn't change any R-environment variable or option in the last...

The problem I'm pointing out do not happen if I type commands directly on the command window (as I wrote in the yesterday email) but it shows when I source any ascii file containing R-command lines, even files...