Rolf Turner schrieb:
On 4/03/2009, at 4:36 AM, Torsten Lange wrote:
Hello,
can any one point me to R-packages (if available) which include spatial
Markov Chain methods?
My second question is more general but hopefully not OT: Currently we
are using the software TPROGS, which let people simulate property
distributions in space by some Markov Chain approaches. We face some
problems due to the lack of information between distances of samples
along borehole path and among boreholes. Is there any way to "trick" it
like for instants in variogram modeling were one might use nested
variograms...?
The spatstat package has facilities for simulating (non-Poisson) spatial
point processes vi MCMC (Metropolis-Hastings) methods. But it's probably
not point patterns that you're after.
cheers,
Rolf Turner
Thanks Rolf! To be more specific I'm a novice to MC method. However, I
don't look on point processes but on spatial auto-correlation of certain
types of soils or sediments in 3D - parameterization for geoscientific
applications like hydrogeology... We created the MC transiograms for
soil classes in vertical and horizontal directions. Problems arise due
to the observation gap between sampling density in vertical (very high
along borehole) and horizontal direction (much lower because of
distances among boreholes).
Thank you for any hints,
Torsten
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.