log likelihood and derivatives for Gamma distribution

log likelihood and derivatives for Gamma distribution

llikGamma(x, shape, rate, full = FALSE)

Arguments

x

variable that is distributed by gamma distribution

shape

this is the distribution's shape parameter. Must be positive.

rate

this is the distribution's rate parameters. Must be positive.

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

llikGamma(1, 1, 10)
#>          fx   dShape dRate
#> 1 -7.697415 2.879801  -0.9