### Name: update-methods
### Title: Methods for Function `update' in Package `stats4'
### Aliases: update-methods update,ANY-method update,mle-method
### Keywords: methods

### ** Examples

x <- 0:10
y <- c(26, 17, 13, 12, 20, 5, 9, 8, 5, 4, 8)
ll <- function(ymax=15, xhalf=6)
    -sum(stats::dpois(y, lambda=ymax/(1+x/xhalf), log=TRUE))
fit <- mle(ll)
## note the recorded call contains ..1, a problem with S4 dispatch
update(fit, fixed=list(xhalf=3))