are.parpdq4.valid {lmomco}

Are the Distribution Parameters Consistent with the Polynomial Density-Quantile4

Description

Is the distribution parameter object consistent with the corresponding distribution? The distribution functions (cdfpdq4, pdfpdq4, quapdq4, and lmompdq4) require consistent parameters to return the cumulative probability (nonexceedance), density, quantile, and L-moments of the distribution, respectively. These functions internally use the are.parpdq4.valid function.

Usage

are.parpdq4.valid(para, nowarn=FALSE)

Arguments

para

A distribution parameter list returned by parpdq4 or vec2par.

nowarn

A logical switch on warning suppression. If TRUE then options(warn=-1) is made and restored on return. This switch is to permit calls in which warnings are not desired as the user knows how to handle the returned value—say in an optimization algorithm.

Value

TRUE

If the parameters are pdq4 consistent.

FALSE

If the parameters are not pdq4 consistent.

Note

This function calls is.pdq4 to verify consistency between the distribution parameter object and the intent of the user.

Author(s)

W.H. Asquith

See Also

is.pdq4, parpdq4

Examples

para <- parpdq4(lmoms(c(46, 70, 59, 36, 71, 48, 46, 63, 35, 52)))
if(are.parpdq4.valid(para)) Q <- quapdq4(0.5, para)