Exponential Correlation Structure

Re-exports nlme::corExp from the nlme package.

Usage

corExp(value, form, nugget, metric, fixed)

Arguments

value

numeric value(s) for the parameter(s)

form

a one-sided formula of the form ~ S1 + ... + Sp, or ~ S1 + ... + Sp | g spatial covariates S1 through Sp and, optionally, a grouping factor g.

nugget

logical; if TRUE a nugget effect is added

metric

character string specifying the distance metric

fixed

unused

See also

corClasses See nlme::corExp for original documentation.