The gstat Package - NexTag Supports Open Source Initiatives

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24 meuse.allFormatNoteThis data frame contains the following columns:sample sample numberx a numeric vector; x-coordinate (m) in RDM (Dutch topographical map coordinates)y a numeric vector; y-coordinate (m) in RDM (Dutch topographical map coordinates)cadmium topsoil cadmium concentration, ppm.; note that zero cadmium values in the original dataset have been shifted to 0.2 (half the lowest non-zero value)copper topsoil copper concentration, ppm.lead topsoil lead concentration, ppm.zinc topsoil zinc concentration, ppm.elev relative elevationom organic matter, as percentageffreq flooding frequency classsoil soil typelime lime classlanduse landuse classdist.m distance to river Meuse (metres), as obtained during the field surveyin.pit logical; indicates whether this is a sample taken in a pitin.meuse155 logical; indicates whether the sample is part of the meuse (i.e., filtered) data set; inaddition to the samples in a pit, an sample (139) with outlying zinc content was removedin.BMcD logical; indicates whether the sample is used as part of the subset of 98 points in thevarious interpolation examples of Burrough & McDonnellsample refers to original sample number. Eight samples were left out because they were notindicative for the metal content of the soil. They were taken in an old pit. One sample contains anoutlying zinc value, which was also discarded for the meuse (155) data set.Author(s)The actual field data were collected by Ruud van Rijn and Mathieu Rikken; data compiled for R byEdzer J. PebesmaReferencesP.A. Burrough, R.A. McDonnell, 1998. Principles of Geographical Information Systems. OxfordUniversity Press.See Alsohttp:/www.gstat.org/meuse.alt
meuse.alt 25Examplesdata(meuse.all)summary(meuse.all)meuse.altMeuse river altitude data setDescriptionThis data set gives a point set with altitudes, digitized from the 1:10,000 topographical map of theNetherlands.Usagedata(meuse.alt)FormatThis data frame contains the following columns:x a numeric vector; x-coordinate (m) in RDM (Dutch topographical map coordinates)y a numeric vector; y-coordinate (m) in RDM (Dutch topographical map coordinates)alt altitude in m. above NAP (Dutch zero for sea level)Referenceshttp:/www.gstat.org/See Alsomeuse.allExamplesdata(meuse.alt)library(lattice)xyplot(y~x, meuse.alt, aspect = "iso")
Page 1 and 2: The gstat PackageMarch 12, 2008Vers
Page 3 and 4: fit.lmc 3ReferencesN.A.C. Cressie,
Page 5 and 6: fit.variogram 5fit.rangesfit.method
Page 7 and 8: fulmar 7Author(s)Edzer J. PebesmaRe
Page 9 and 10: gstat-internal 9See Alsopredict.gst
Page 11 and 12: gstat 11DetailsValuevarianceweights
Page 13 and 14: hscat 13# and the manuals for predi
Page 15 and 16: jura 15so by extending the image to
Page 17 and 18: krige 17jura.pred$Rock = factor(pre
Page 19 and 20: krige 19Valuea data frame containin
Page 21 and 22: krige.cv 21formulalocationsdatamode
Page 23: map.to.lev 23map.to.levrearrange da
Page 27 and 28: ossfim 27ossfimKriging standard err
Page 29 and 30: oxford 29FormatNoteThis data frame
Page 31 and 32: plot.gstatVariogram 31Examplesdata(
Page 33 and 34: plot.pointPairs 33g = gstat(NULL, "
Page 35 and 36: plot.variogramCloud 35Valuexlimylim
Page 37 and 38: predict.gstat 37Detailsna.actionsps
Page 39 and 40: show.vgms 39v
Page 41 and 42: sic2004 41Examplesshow.vgms()show.v
Page 43 and 44: spplot.vcov 43Examplesdata(sic2004)
Page 45 and 46: variogram 45cutoffwidthalphabetatol
Page 47 and 48: variogramLine 47variogram(log(zinc)
Page 49 and 50: vgm 49add.toanisxa variogram model
Page 51 and 52: vgm.panel.xyplot 51Usagevgm.panel.x
Page 53 and 54: walker 53ReferencesApplied Geostati
Page 55: INDEX 55krige,formula,Spatial-metho

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