Generalized Gamma {rmutil} | R Documentation |
These functions provide information about the generalized gamma
distribution with location parameter equal to m
, dispersion equal
to s
, and family parameter equal to f
.
dggamma
gives the density, pggamma
gives the distribution
function, hggamma
gives the hazard function.
The generalized gamma distribution has density
f(y) = 1/((m/s)^(fs) Gamma(s)) y^(f(s-1)) exp(-(y s/m)^f)
where m is the location parameter of the distribution, s is the dispersion, and f is the family parameter.
f=1 yields a gamma distribution, s=1 a Weibull distribution, and s=infinity a log normal distribution.
dggamma(y, m, s, f) pggamma(q, m, s, f) hggamma(y, m, s, f)
y |
vector of responses. |
q |
vector of quantiles. |
m |
vector of location parameters. |
s |
vector of dispersion parameters. |
f |
vector of family parameters. |
J.K. Lindsey
dgamma
for the gamma distribution,
dweibull
for the Weibull distribution, dlnorm
for the log normal distribution.
dggamma(2, 5, 4, 2) pggamma(2, 5, 4, 2)