DelayedWeibull {incubate} | R Documentation |
Delayed Weibull Distribution
Description
Density, distribution function, quantile function and random generation for the delayed Weibull distribution.
Besides the additional parameter delay
, the other two Weibull-parameters are in principle retained as in R's stats-package:
-
shape
-
scale
(as inverse of rate)
Usage
dweib_delayed(
x,
delay1,
shape1,
scale1 = 1,
delay2 = NULL,
shape2 = NULL,
scale2 = 1,
delay = delay1,
shape = shape1,
scale = scale1,
log = FALSE
)
pweib_delayed(
q,
delay1,
shape1,
scale1 = 1,
delay2 = NULL,
shape2 = NULL,
scale2 = 1,
delay = delay1,
shape = shape1,
scale = scale1,
lower.tail = TRUE,
log.p = FALSE
)
qweib_delayed(
p,
delay1,
shape1,
scale1 = 1,
delay2 = NULL,
shape2 = NULL,
scale2 = 1,
delay = delay1,
shape = shape1,
scale = scale1,
lower.tail = TRUE,
log.p = FALSE
)
rweib_delayed(
n,
delay1,
shape1,
scale1 = 1,
delay2 = NULL,
shape2 = NULL,
scale2 = 1,
delay = delay1,
shape = shape1,
scale = scale1
)
mweib_delayed(
t = +Inf,
delay1,
shape1,
scale1 = 1,
delay2 = NULL,
shape2 = NULL,
scale2 = 1,
delay = delay1,
shape = shape1,
scale = scale1
)
Arguments
x |
A numeric vector of values for which to get the density. |
delay1 |
numeric. The first delay, must be non-negative. |
shape1 |
numeric. First shape parameter, must be positive. |
scale1 |
numeric. First scale parameter (inverse of rate), must be positive. |
delay2 |
numeric. The second delay, must be non-negative. |
shape2 |
numeric. The second shape parameter, must be non-negative. |
scale2 |
numeric. The second scale parameter (inverse of rate), must be positive. |
delay |
numeric. Alias for first delay. |
shape |
numeric. Alias for first shape. |
scale |
numeric. Alias for first scale. |
log |
logical. Return value on log-scale? |
q |
A numeric vector of quantile values. |
lower.tail |
logical. Give cumulative probability of lower tail? |
log.p |
logical. P-value on log-sclae? |
p |
A numeric vector of probabilities. |
n |
integer. Number of random observations requested. |
t |
A numeric vector of times that restrict the mean survival. Default is |
Details
Additional arguments are forwarded via ...
to the underlying functions of the exponential distribution in the stats-package.
The numerical arguments other than n
are recycled to the length of the result. Only the first elements of the logical arguments are used.
Value
Functions pertaining to the delayed Weibull distribution:
-
dweib_delayed
gives the density -
pweib_delayed
gives the distribution function -
qweib_delayed
gives the quantile function -
rweib_delayed
generates a pseudo-random sample -
mweib_delayed
gives the restricted mean survival time
The length of the result is determined by n
for rweib_delayed
, and is the maximum of the lengths of the numerical arguments for the other functions, R's recycling rules apply.