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RandomFields (version 3.0.35)

RMconstant: Constant Covariance Matrix

Description

RMconstant is a user-defined covariance according to the given covariance matrix.

Usage

RMconstant(M, vdim, element, var, scale, Aniso, proj)

Arguments

M
a numerical matrix defining the user-defined covariance for a random field; The matrix should be positive definite, symmetric and its dimension should be equal to the length of observation or simulation vector.
vdim
an integer value; defining the response dimension (for details see RFgetModelNames).
element
integer. If a list of several matrices is given then element chooses the one that should currently be used. Default: 0
var,scale,Aniso,proj
optional arguments; same meaning for any RMmodel. If not passed, the above covariance function remains unmodified.

Value

Details

Note, this is not a covariance model for arbitrary locations, the covariance is fixed and user-defined by a given matrix corresponding to the locations. In particular, it is used in RFfit to define neighbour or network structure in the data.

References

  • Ober, U., Ayroles, J.F., Stone, E.A., Richards, S., Zhu, D., Gibbs, R.A., Stricker, C., Gianola, D., Schlather, M., Mackay, T.F.C., Simianer, H. (2012):Using Whole Genome Sequence Data to Predict Quantitative Trait Phenotypes in Drosophila melanogaster. PLoS Genet 8(5): e1002685.

See Also

RMmodel, RFsimulate, RFfit.

Examples

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FinalizeExample()

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