[R-sig-Geo] ADDING POINTS

I want to add random points conditionally(for example up to fulfilment of a threshold intensity) to an existing pattern(for instance to a Poisson process). What is the best procedure on SpatStat..?. BTW can I start a Sequential process conditionally on an existing process and generate points

Re: [R-sig-Geo] Univeral kriging

R geo-helpers   i am new to r and would like you to help me as i am trying to go through basic steps. I need to compute a predicted value at point (3,3) and its variance given la set of locations and value. i want to make the code generic for any size such that i would be able to estimate

Re: [R-sig-Geo] inquiry on suitable packages

Hakim, There are plenty of (SDM) algorithms that generate species distribution maps given occurrence (or density) records and environmental maps. For a systematic review, see e.g. Tsoar et al. 2007 [http://dx.doi.org/10./j.1472-4642.2007.00346.x]. In R, you can try using the

Re: [R-sig-Geo] Univeral kriging

Hi there, good routines already exist in several R libraries for doing this. They will save you trouble in developing bug-free and efficient code. Check out gstat and maybe fields. If you still want to implement kriging manually, these scripts, which I developed for a class exercise, might be

Re: [R-sig-Geo] Univeral kriging

Tankiso, Here is some tips: - make your code such that cut and paste works for us; for me, the ^2 below is vanished (and interpreted as superscript right away, I don't know why) - you didn't test your code, as the function inv does not exist - your code doesn't compute the kriging variance - the

[R-sig-Geo] Spatial Panel data models

Hi group, Does anyone knows of applications of spatial panel data models in R. Thanks Juan -- Juan Tomás Sayago Universidad Central juantomas-sayago.co.cc Objetivo: Garantizar a cada ser humano que habite en el país, una cantidad mínima de agua con calidad segura para el consumo humano, en forma

Re: [R-sig-Geo] Spatial Panel data models

Juan Tomas Sayago wrote: Hi group, Does anyone knows of applications of spatial panel data models in R. Thanks Juan ___ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch

Re: [R-sig-Geo] Spatial Panel data models

in addition: please search the archives of this mailing list, I typed this into google: R-sig-geo spatial panel data model and got: https://stat.ethz.ch/pipermail/r-sig-geo/2006-August/001237.html as the first hit. cheers, Paul Juan Tomas Sayago wrote: Hi group, Does anyone knows of

Re: [R-sig-Geo] Spatial Panel data models

Hello. --- Juan Tomas Sayago juantomas.say...@gmail.com wrote: Does anyone knows of applications of spatial panel data models in R. There's one package named splm available from R-Forge(http://r-forge.r-project.org/projects/splm/). And introduction document as follows.

Re: [R-sig-Geo] Create ESRI personal geodatabase (.mdb) in R?

Hello. I think it's good idea for R to use SpatiaLite instead of dealing with shapefiles directly. SpatiaLite has functions of Raster GIS and routing, so these functions will enrich spatial analyses in R. It'll be better SQLite/SpatiaLite embedded within R as internal DB. I hope some day

Re: [R-sig-Geo] Space-time cluster analysis

Hi Joe, I am using space-time cluster analysis to search for areas/times of high disease incidence. My data is aggregated by geographic areas with known background population numbers. So under the null hypothesis, the number of cases in a given location/time period is Poisson distributed,