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Fields URL for a Vignette on Using This Package and Some Background on Spatial Statistics

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Fields URL for a Vignette on Using This Package and Some Background on Spatial Statistics Package ‘fields’ June 25, 2021 Version 12.5 Date 2021-06-15 Title Tools for Spatial Data Maintainer Douglas Nychka <[email protected]> Description For curve, surface and function fitting with an emphasis on splines, spatial data, geostatistics, and spatial statistics. The major methods include cubic, and thin plate splines, Kriging, and compactly supported covariance functions for large data sets. The splines and Kriging methods are supported by functions that can determine the smoothing parameter (nugget and sill variance) and other covariance function parameters by cross validation and also by restricted maximum likelihood. For Kriging there is an easy to use function that also estimates the correlation scale (range parameter). A major feature is that any covariance function implemented in R and following a simple format can be used for spatial prediction. There are also many useful functions for plotting and working with spatial data as images. This package also contains an implementation of sparse matrix methods for large spatial data sets and currently requires the sparse matrix (spam) package. Use help(fields) to get started and for an overview. The fields source code is deliberately commented and provides useful explanations of numerical details as a companion to the manual pages. The commented source code can be viewed by expanding the source code version and looking in the R subdirectory. The reference for fields can be generated by the citation function in R and has DOI <doi:10.5065/D6W957CT>. Development of this package was supported in part by the National Science Foundation Grant 1417857, the National Center for Atmospheric Research, and Colorado School of Mines. See the Fields URL for a vignette on using this package and some background on spatial statistics. License GPL (>= 2) URL https://github.com/NCAR/Fields Depends R (>= 3.0), methods, spam, viridis Imports maps NeedsCompilation yes 1 2 R topics documented: Repository CRAN Author Douglas Nychka [aut, cre], Reinhard Furrer [aut], John Paige [aut], Stephan Sain [aut], Florian Gerber [aut], Matthew Iverson [aut], University Corporation for Atmospheric Research [cph] Date/Publication 2021-06-25 12:40:05 UTC R topics documented: add.image . .4 arrow.plot . .5 as.image . .6 as.surface . .8 BD.............................................. 10 bplot . 11 bplot.xy . 12 Chicago ozone test data . 13 circulantEmbedding . 14 CO2............................................. 17 Colorado Monthly Meteorological Data . 19 colorbar.plot . 23 compactToMat . 25 Covariance functions . 26 CovarianceUpper . 32 cover.design . 33 drape.plot . 39 envelopePlot . 42 Exponential, Matern, Radial Basis . 43 fields . 45 fields testing scripts . 48 fields-stuff . 49 fields.grid . 51 fields.hints . 52 flame ............................................ 55 grid list . 56 image.cov . 59 image.plot . 63 image.smooth . 73 image2lz . 76 imagePlot . 78 interp.surface . 89 Krig............................................. 91 Krig.Amatrix . 99 Krig.null.function . 101 R topics documented: 3 Krig.replicates . 102 KrigFindLambda . 103 lennon . 105 minitri . 106 mKrig . 106 mKrigMLE . 114 NorthAmericanRainfall . 120 ozone2 . 121 plot.Krig . 122 plot.surface . 124 poly.image . 125 predict.Krig . 127 predictSE . 130 predictSurface . 132 print.Krig . 135 pushpin . 136 qsreg............................................. 137 QTps ............................................ 139 quilt.plot . 144 rat.diet . 147 RCMexample . 148 rdist . 149 rdist.earth . 151 registeringCode . 153 ribbon.plot . 154 RMprecip . 155 set.panel . 157 sim.spatialProcess . 159 smooth.2d . 165 spam2lz . 167 spatialProcess . 169 splint . 178 sreg ............................................. 179 stats . 184 stats.bin . 185 summary.Krig . 186 summary.ncdf . 187 supportsArg . 188 surface.Krig . 189 The Engines: . 190 tim.colors . 194 Tps ............................................. 197 transformx . 205 US.............................................. 207 US.dat . 207 vgram . 208 vgram.matrix . 210 Wendland . 212 4 add.image world ............................................ 214 WorldBankCO2 . 215 xline . ..
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