[R-sig-Geo] Autoregression with state-space models

2013-09-09 Thread Israel Ikoyi
Does anybody know how the MARSS package works or any other R package for autoregression with state-space models? Your help will be highly appreciated.   Kind regards, ISRAEL O. IKOYI [[alternative HTML version deleted]] ___ R-sig-Geo mailing l

[R-sig-Geo] Regression kriging error

2013-07-19 Thread Israel Ikoyi
ssage: Error in eval(expr, envir, enclos) : object 'OrgMat' not found. Can someone help me on how to solve this? Israel Ikoyi [[alternative HTML version deleted]] ___ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo

[R-sig-Geo] Boxcox transformation of explanatory variables

2013-06-27 Thread ISRAEL IKOYI
your Subject line so it is more specific >than "Re: Contents of R-sig-Geo digest..." > > >Today's Topics: > > 1. Re: spatial networks (Mathieu Rajerison) > 2. help for show.vgms (Saman Monfared) > 3. Re: R-sig-Geo Digest, Vol 118, Issue 25 (Israel Ikoyi

Re: [R-sig-Geo] R-sig-Geo Digest, Vol 118, Issue 25

2013-06-26 Thread Israel Ikoyi
How can I do boxcox transformation for explanatory variables and use it in a multiple linear regression?   Kind regards, ISRAEL O. IKOYI MSc. Thesis Research Student Wageningen University  Department of Soil Quality  P.O. Box 47  NL-6700 AA Wageningen  The Netherlands ___

[R-sig-Geo] warning: singular in variogram fit

2013-06-16 Thread Israel Ikoyi
Dear R-sig-Geo, I am trying to fit the the "Materon' model to my data with this command: # define gstat object and compute variogram: # mal = subset(mal, !is.na(mal$Zntot.s)) # needed if missing values g = gstat(id = c("Zntot.s"), formula = Zntot.s~1, data = mal) vg = variogram(g) # vg = variogra