search for: geostatist

Hi, I read somewhere that when carrying out geostatistical analysis in R you should not use latitude and longitude...can anyone expand on this a little for me, and what would be the best coordinate system to use? I have my data in a geographic coordinate system, WGS84, decimal degrees....is this the wrong format for such analyses? I have also convert...

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 good for doing it mannually for small number of data set. but if i...

The majority of the functionality present in the gstat stand-alone program (http://www.gstat.org/) is now available as a package/library for the S language (R, S-Plus), again called gstat. The package provides multivariable geostatistical modelling, prediction and simulation, as well as several visualisation functions. Gstat was started 10 years ago and was released under the GPL in 1996; the original stand-alone program is closely linked to several GIS systems. Gstat was not initially written for teaching purposes, but for res...

The majority of the functionality present in the gstat stand-alone program (http://www.gstat.org/) is now available as a package/library for the S language (R, S-Plus), again called gstat. The package provides multivariable geostatistical modelling, prediction and simulation, as well as several visualisation functions. Gstat was started 10 years ago and was released under the GPL in 1996; the original stand-alone program is closely linked to several GIS systems. Gstat was not initially written for teaching purposes, but for res...

...functions, like cor.number or cov.spatial is > similar in the sense that they only ask for data locations, not data values.. > > Any hints or pointer is appreciated! > yan > > > On 17 Jan 2003, Ernesto Jardim wrote: > > > Hi > > > > I'm working with geostatistics and I use geoR package, which I find very > > good. However it doesn't implement the classic geostatistics but a > > "model based geostatistics" as proposed by Peter Diggle and team. > > > > R news of June 2001 has an article about geoR by Paulo Ribeiro, the...

Hello everyone! I am using GRASS with spgrass6 for my work. I will be using variograms in the process of landsat image classification. I am quite ok with GRASS but am finding R really tough. I understand that spgrass6 is a link between GRASS and R which can read and write raster/vector layers. Out of really many packages in R, for generating variograms out of landsat images which packages of R

...mbers. How can I make this output into the same format as the input, i.e. a nice matrix with three columns of coordinates and a last column with said variable? Kind regards and thank you for helping! -- View this message in context: http://r.789695.n4.nabble.com/How-to-make-an-orderly-matrix-from-geostatistical-data-tp3874499p3874499.html Sent from the R help mailing list archive at Nabble.com.

Hello: I would like to make h-scatter plot. My data looks like as follow: x, y, z, 12.0, 11.2, 12, 10.21, 5.42, 8, 5.12, -8.25, 7, .... I want to make h-scatter plot for the z values by difference distance h from 1 to 20. There are 1023 observations. Do I need to change data class from data-frame to others? I am not sure we can make h-scatter plot in R. Have a nice day. HongSU.

> If you use the spatial objects provided by the > sp-package (http://cran.r-project.org/web/packages/sp/vignettes/sp.pdf) > you transform your data to other projections using the spTransform package. Thus you will need the rgdal package in complement (it actually includes spTransform). This function is extremely convenient: you can manage coordinate transformations extremely easily

Hello everybody! For my academic project work I intend to use only open-source software. My objective is to carry out classification of satellite digital images using Geostatistics. I found out GRASS is a good software for image processing. Also a good geostatistics software is R. It is also known that R can be used in combination with GRASS. But I am not able to confirm that satellite digital image classification can be carried out using geostatistical analysis with GRASS...

For a geostatistical analysis, I would like to split my dataset randomly into 2 parts: a prediction set (with 2/3 of my data) and a validation set (with 1/3 of my data). Both datasets will thus contain different data. Any suggestions? [[alternative HTML version deleted]]

...xperience with one or both of these languages); a code sample may be requested to demonstrate proficiency Experience implementing a variety of spatially-explicit statistical models in R and/or Matlab, including at least 3 of the following: machine learning models (e.g., component-wise boosting), geostatistical models, GLMMs, GAMs, regression trees/forests Ability to independently identify, analyze and solve complex statistical and computational problems Demonstrated written and oral scientific communication skills Able to work effectively in a dynamic, fast-paced, team-oriented multi-project envir...

Hi All, I am a PhD student in forestry science and I am working with LiDAR data set (huge data set). I am a brand-new in R and geostatistic (SORRY, my background it?s in forestry) but I wish improve my skill for improve myself. I wish to develop a methodology to processing a large data-set of points (typical in LiDAR) but there is a problem with memory. I had created a subsample data-base but the semivariogram is periodic shape and I...

I need to install some geostatistics packages that are not in the binaries, for example gstat. I downloaded rm171 and installed, and I even added precomplied packages successfully. Unfortunately, I do not know how to add packages available as gstat. If you can spare a minute, could you give me a lead on this? Any other pointers on...

Hi I have two geostatistical models from geoR. An ordinary kriging model with AIC=-148.6 and a universal kriging model with AIC=-156.7, there are 345 data points. The improvement shown by the AIC by adding a trend component to the model seems quite small given the number of data points, is there a test to see if the...

hello I want to know about therotical basis of Kriging in elemantary level. I will appreciate if anyone sends me address,link,e-documents, etc.. kind regards -- Ahmet Temiz General Directory of Disaster Affairs Ankara TURKEY ______________________________________ Inflex - installed on mailserver for domain @deprem.gov.tr Queries to: postmaster at deprem.gov.tr

Hello, I've got a big problem. I'm using R for geostatistical analyses, especially the field-package. I try to generate plots after the kriging process with help of image.plot(..., col=terrain.colors, ...). Everything works fine, but I want to reverse the color-palettes (heat.colors, topo.colors or gray()) to get darkest colors at highest data-values inst...

Hi, Is there any package or functions in R that can perform tests and estimation for a spatial econometric model in a simultaneous system? Thank you!!! Xia Feng

Schlatter Christian wrote: >Dear list members > > > >I'm very new to R but a little informed about geostatistics. > >As I was looking for possibilities of geostatistical analysis in R I encountered at least two very interesting packages: > > > >Rgeo and gstat > > > >And of course I'm wondering now about the one which fits better my needs which are the comparison of spa...

Dear all, Sorry for such basic question, but. when R "says": library(Rcitrus) Loading required package: geoR Loading required package: sp ------------------------------------------------------------- Analysis of geostatistical data For an Introduction to geoR go to http://www.est.ufpr.br/geoR geoR version 1.6-8 (built on 2006/06/29) is now loaded ------------------------------------------------------------- Loading required package: splancs Spatial Point Pattern Analysis Code in S-Plus Version 2 - Spatia...