startberngamma {qmap}

Rough parameter estimate for the Bernoulli-Gamma distribution

Description

Estimates rough starting values for the Bernoulli-Gamma distribution using the method of moments for the shape and the scale parameters. The probability of non-zero events is estimated as the fraction of values that are larger than zero.

Usage

startberngamma(x)

Arguments

x

numeric vector.

Value

A list containing:

prob

probability of non-zero event.

scale

scale parameter of the gamma distribution.

shape

shape parameter of the gamma distribution.

Note

In this package startberngamma is intended to be used in conjunction with fitQmapDIST (and mledist) with parameter distr="berngamma".

Author(s)

Lukas Gudmundsson

See Also

fitQmapDIST, berngamma, fitdist

Examples

gg <- rberngamma(n=300, prob=0.2, scale=1, shape=1)
startberngamma(gg)
mledist(gg,"berngamma",startberngamma(gg))