log likelihood and derivatives for Weibull distribution

log likelihood and derivatives for Weibull distribution

llikWeibull(x, shape, scale, full = FALSE)

Arguments

x

variable distributed by a Weibull distribution

shape, scale

shape and scale parameters, the latter defaulting to 1.

full

Add the data frame showing x, mean, sd as well as the fx and derivatives

Value

data frame with fx for the log pdf value of with dProb

that has the derivatives with respect to the prob parameters at the observation time-point

Author

Matthew L. Fidler

Examples

llikWeibull(1, 1, 10)
#>          fx    dShape dScale
#> 1 -2.402585 -1.072327  -0.09