fields

Description

For curve, surface and function fitting with an emphasis on splines, spatial data, geostatistics, and spatial statistics. The major methods include Gaussian spatial process prediction (known as Kriging), cubic and thin plate splines, and compactly supported covariance functions for large data sets. The spline and spatial process 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 maximum likelihood. For spatial process prediction 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. As included are fast approximations for prediction and conditional simulation for larger data sets. 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 based the R sparse matrix package spam. Use help(fields) to get started and for an overview. All package graphics functions focus on extending base R graphics and are easy to interpret and modify. 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 of this package 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.

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Missing link or links in Rd file 'offGridWeights.Rd':
  ‘ predictSurface’

See section 'Cross-references' in the 'Writing R Extensions' manual.

Missing link or links in Rd file 'offGridWeights.Rd':
  ‘ predictSurface’

See section 'Cross-references' in the 'Writing R Extensions' manual.

Missing link or links in Rd file 'offGridWeights.Rd':
  ' predictSurface'

See section 'Cross-references' in the 'Writing R Extensions' manual.

Check History

Missing link or links in Rd file 'offGridWeights.Rd':
  ‘ predictSurface’

See section 'Cross-references' in the 'Writing R Extensions' manual.

Missing link or links in Rd file 'offGridWeights.Rd':
  ‘ predictSurface’

See section 'Cross-references' in the 'Writing R Extensions' manual.

Missing link or links in Rd file 'offGridWeights.Rd':
  ' predictSurface'

See section 'Cross-references' in the 'Writing R Extensions' manual.

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