Density for parametric survival distribution

DESCRIPTION:

Density for parametric survival distribution.

USAGE:

f.phis(z, distribution) 

REQUIRED ARGUMENTS:

z
time at which density is desired (may be negative).
distribution
the failure distribution. This may be one of "extreme", "gaussian", or "logistic"

VALUE:

The density of the distribution at the time z assuming link = "identity".

SEE ALSO:

,

EXAMPLES:

f.phis(1.96, "gaussian")