Re: [R-sig-Geo] kriging as fish swim, not as crows fly

2010-01-30 Thread Facundo Muñoz
Multidimensional Scaling (MDS) is certainly an option to be considered. Its suitability depends, of course, on the specific application. In my case, which is conceptually similar to Martin's, that option was discarded. And I think I can explain why whith this single image: http://www.geeitema.

Re: [R-sig-Geo] kriging as fish swim, not as crows fly

2010-01-29 Thread Martin Renner
ig-geo- >> boun...@stat.math.ethz.ch] On Behalf Of Martin Renner >> Sent: Wednesday, January 27, 2010 1:07 AM >> To: r-sig-geo@stat.math.ethz.ch >> Subject: [R-sig-Geo] kriging as fish swim, not as crows fly >> >> Hi All, >> >> I want to kirg fis

Re: [R-sig-Geo] kriging as fish swim, not as crows fly

2010-01-29 Thread Greg Snow
Of Martin Renner > Sent: Wednesday, January 27, 2010 1:07 AM > To: r-sig-geo@stat.math.ethz.ch > Subject: [R-sig-Geo] kriging as fish swim, not as crows fly > > Hi All, > > I want to kirg fish and seabird densities within an estuary which has > several arms. Since

Re: [R-sig-Geo] kriging as fish swim, not as crows fly

2010-01-29 Thread Facundo Muñoz
Ooops, you're right, sorry. This shows that nobody tried to use it before, haha :) Now I have uploaded the source files (http://www.geeitema.org/guenmap/index.jsp?opcion=resultados&idioma=en). Please let me know if you have any trouble. I have just tested it in Linux. It compiled and seem to wo

Re: [R-sig-Geo] kriging as fish swim, not as crows fly

2010-01-29 Thread Jacob van Etten
/10, Pilar Tugores Ferra wrote: From: Pilar Tugores Ferra Subject: Re: [R-sig-Geo] kriging as fish swim, not as crows fly To: "Martin Renner" Cc: r-sig-geo@stat.math.ethz.ch Date: Wednesday, January 27, 2010, 5:35 PM Hi, Martin Two years ago there was a similar discussion on the list:

Re: [R-sig-Geo] kriging as fish swim, not as crows fly

2010-01-28 Thread Martin Renner
Hi Facu, great, this is just what I have been looking for. You say that your modifications to geoR are open source. On your website I found the geoR.dll file, but no source code. The .dll is of little use platforms other than windows. Is there any way I could get the source? Thank you for the

Re: [R-sig-Geo] kriging as fish swim, not as crows fly

2010-01-28 Thread Facundo Muñoz
Hi Martin. I have succeeded in doing something like that. Please see http://dx.doi.org/10.1016/j.mcm.2009.05.021. I used GRASS for the computation of the non-euclidean distances and modified the geoR library in order to be able to estimate de variograms and perform kriging prediction with thos

Re: [R-sig-Geo] kriging as fish swim, not as crows fly

2010-01-28 Thread Pilar Tugores Ferra
g-geo@stat.math.ethz.ch Asunto: Re: [R-sig-Geo] kriging as fish swim, not as crows fly Not kriging as such, but check out the soap-film smoothing in package mgcv: http://www.maths.bath.ac.uk/~sw283/simon/papers/soap.pdf FWIW, there are binning methods with MCMC in the package tripEstimation that have si

Re: [R-sig-Geo] kriging as fish swim, not as crows fly

2010-01-27 Thread Michael Sumner
Not kriging as such, but check out the soap-film smoothing in package mgcv: http://www.maths.bath.ac.uk/~sw283/simon/papers/soap.pdf FWIW, there are binning methods with MCMC in the package tripEstimation that have similar features, but they are particularly focussed on individual track estimatio

[R-sig-Geo] kriging as fish swim, not as crows fly

2010-01-27 Thread Martin Renner
Hi All, I want to kirg fish and seabird densities within an estuary which has several arms. Since neither organisms cross land, the appropriate distances would not be euclidian but over-water (as fish swim). There are several papers, describing this problem and how to deal with it (see below),