search for: geostatics

I am looking for online courses to learn Spatial Statistics using R. Statistics.com is offering an online course in December on the same topic but that schedule doesn't suit mine. Are there any other similar modes for learning spatial statistics using R??? Can someone please advice??? Thank you. Ravi -- View this message in context:

...(but you may meet meory problem anyway). Still more straigthfully, if you intend to use interpolation methods such as kriging, you don't need to manage the distance matrix building by yourself. See: library(geoR) library(help=geoR) ?variog ?variofit ?likfit? etc... If you want further use geostatics (eg via geoR or gstat), you will anyway have to manage with memory limits (not due to R). On my computer (portable HP compaq nx7000) I can hardly manage with more than 2000 observations using geoR (far from your 18227 observations). I had to krige on a dataset with 9000 observations recently an...

Hello to everybody ! I don't have a question directly connected with R, but it takes starting point from the use of the R function Krig for kriging interpolation and from the idea of making a different implemetation of the function for my purposes. Doas anyone know where can I find free C or C++ codes of kriging ? As always, thanks a lot in advance, Paola.

System info: Linux slackware R Version 1.5.1 (2002-06-17) ESS 5.1.21 Emacs 21.2.1 ------------------- Colleagues Thanks very much for advice. I was not aware of the Fields package (although I've been using Geostat and Spatial). The image.plot() function in Fields does a lovely job, with an added bonus of fixing the problem I was having of balancing the number of colour levels with the

R Experts, I'm looking for some help with the geoR package. I'm trying to krig some data without using a global neighborhood. I would like to set my moving neighborhood to a distance, say 100 meters, where I know my data is spatially correlated. I have tried the ksline function, but that only allows my moving neighborhood to be set to a number of data points. But, since my data

[hoping to redeem myself for my last spurious bug report] From ?corRatio: Letting d denote the range and n denote the nugget effect, the correlation between two observations a distance r apart is (r/d)^2/(1+(r/d)^2) when no nugget effect is present and (1-n)*(r/d)^2/(1+(r/d)^2) when a nugget effect is assumed. This disagrees with the C code (corStruct.c) /* Rational class

hello i'm trying the script of gstat course of munich "Spatial and spacetime classes in R " in http://geostat-course.org/Topic_Bivand_2012 the code is follow ... but a in timeIsInterval(dts) the script failed.... the message is "timeIsInterval function not found" i'm updated R and package spacetime but has not worked any suggestions? thanks setwd("C:/Documents

I notice compositions was removed on CRAN, that's one I want to try out. I downloaded the last tarball, the build output doesn't look that bad. A warning, no errors. $ R CMD build compositions * checking for file ?compositions/DESCRIPTION? ... OK * preparing ?compositions?: * checking DESCRIPTION meta-information ... OK * cleaning src * checking for LF line-endings in source and make

Hi, all, Have anyone used kringing included in R? How is it? Does it handle anisotropy data well? How does it compare with Kriging in Arc/Info? or other geostatistics software customized to do kriging or other geostatistics functions? I tried Easykriging, a geostatistics tool developed for Matlab. It has very nice GUI, but it does not provide library which i can call in my programs. so it is

Hola buenos días: Hace algún tiempo mandé una duda que sobre fichero tipo shapefile que publica el Instituto Geográfico Nacional de España y que detallo en el word Duda_sobre_shp. El tema es que al final no obtuve respuesta (es cierto que lo mandé en Agosto y en esa fechas entiendo que sea normal, por tanto por recomendación de un conocido vuelvo de nuevo a remitir la cuestión) Como no podía

Dear All, Does anyone know of any GIS packages for R? I know that there are GIS facilities for S-Plus (eg Arc Info), and am looking for freeware equivalents. Best wishes, Sam Brown ----------------------------------------------------------- Sam Brown sam at zoo.cam.ac.uk Department of Zoology tel +44 1223 330933 Downing Street fax +44 1223 334466