Description Usage Arguments Details Value Author(s) See Also

Constructs a matrix of terms representing a low order polynomial and binds additional columns due to covariates ( the Z matrix)

1 | ```
Krig.null.function(x, Z = NULL, drop.Z = FALSE, m)
``` |

`x` |
Spatial locations |

`Z` |
Other covariates to be associated with each location. |

`drop.Z` |
If TRUE only the low order polynomial part is created. |

`m` |
The polynomial order is (m-1). |

This function can be modified to produce a different fixed part of the spatial model. The arguments x, Z and drop.Z are required but other arguments can be passed as part of a list in null.args in the call to Krig.

A matrix where the first columns are the polynomial terms and the following columns are from Z.

Doug Nychka

Krig

fields documentation built on Jan. 30, 2018, 1:07 a.m.

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