[R-sig-Geo] Regression Kriging

[Tomislav Hengl]

Dear Pritam,

Please forward us the R code, and, if possible, upload your data to some ftp server.

The coordinate system string of the maps imported to R can be set using:

> data(meuse)
> coordinates(meuse) <- ~x+y
> proj4string(meuse) <- CRS("+init=epsg:28992")

A list of epsg code is available via http://epsg-registry.org 

FYI: ILWIS GIS can be also controlled from R (see
http://spatial-analyst.net/wiki/index.php?title=Software#ILWIS_GIS), regression-kriging/universal
kriging you can run from a variety of software
(http://spatial-analyst.net/wiki/index.php?title=Regression-kriging_guide).

Personally, I would go for a combination of R+SAGA (e.g.
http://geomorphometry.org/view_scripts.asp?id=24) to generate maps of large areas.

First try all these combinations and then get back to us once you have a concrete problem with the
code (note that this is an R mailing list, and not an ILWIS mailing list).

I am sure we will find a solution to your problem.


Tom Hengl
http://spatial-analyst.net 


-----Original Message-----
From: r-sig-geo-bounces at stat.math.ethz.ch [mailto:r-sig-geo-bounces at stat.math.ethz.ch] On Behalf Of
Pritam Sharma
Sent: Thursday, November 27, 2008 9:51 AM
To: r-sig-geo at stat.math.ethz.ch
Subject: [R-sig-Geo] Regression Kriging

Hello Sir/Madam


This is Pritam Chand, working as Technical Associate in Forest Survey of
India, Dehrdaun. I have some doubts regarding regression kriging. Actually I
am trying to make final regression kriging predicted map and using R and
ILWIS software. I am able to reach steps upto variogram analysis of
residuals but in last command for regression kriging it is giving error that
the predictor variables are in different coordinate systems........ it might
be because of using ILWIS...... as it is its basic problem.... I am using 8
predictor variable maps......and with the help of these predicting soil
organic carbon......All the steps are running except the final one command
of regression kriging......

Please help me regarding this query or kindly send me some link or email
from where I get help regrading this query. If possible then plz send me
sample code for this problem so I can get idea and go forward with my
objectives.

With regards,

Pritam Chand Sharma,
FSI, Dheradun,
India



-- 
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