llikChisq {rxode2} | R Documentation |
log likelihood and derivatives for chi-squared distribution
Description
log likelihood and derivatives for chi-squared distribution
Usage
llikChisq(x, df, full = FALSE)
Arguments
x |
variable that is distributed by chi-squared distribution |
df |
degrees of freedom (non-negative, but can be non-integer). |
full |
Add the data frame showing x, mean, sd as well as the fx and derivatives |
Details
In an rxode2()
model, you can use llikChisq()
but you have to
use the x and df arguments. You can also get the derivative of df
with
llikChisqDdf()
.
Value
data frame with fx
for the log pdf value of with dDf
that has the derivatives with respect to the df
parameter
the observation time-point
Author(s)
Matthew L. Fidler
Examples
llikChisq(1, df = 1:3, full=TRUE)
llikChisq(1, df = 6:9)
et <- et(1:3)
et$x <- 1
model <- function() {
model({
fx <- llikChisq(x, time)
dDf <- llikChisqDdf(x, time)
})
}
rxSolve(model, et)
[Package rxode2 version 2.1.3 Index]