An object of class deform and then of class anisotropic
Arguments
x
a 2-column matrix comprising x and y coordinates column-wise, respectively, or a list; see Details for the latter
z
a variance-covariance matrix
n
an integer number of data
correlation
a logical defining whether z should be assumed to be a correlation matrix; defaults to FALSE
cosine
a logical defining whether the powered exponential covariance function should be multiplied by the cosine of scaled distances, i.e. giving a damped oscillation; defaults to FALSE
standardise
a character string that governs whether dimensions are scaled by a common ("together") or dimension-specific factor; defaults to "together"
Details
If x is a list, then it wants elements "x", "z" and "n" as described above.
References
Sampson, P. D. and Guttorp, P. (1992) Nonparametric Estimation of Nonstationary Spatial
Covariance Structure, Journal of the American Statistical Association, 87:417, 108-119,
tools:::Rd_expr_doi("10.1080/01621459.1992.10475181")'