Displaying 4 results from an estimated 4 matches for "lymax".
Did you mean:
ymax
2008 Feb 12
1
Namespace/method oddity
...llowing:
> library(stats4)
> example(mle)
> confint.default(fit2)
Error in UseMethod("vcov") : no applicable method for "vcov"
In addition: Warning message:
In object$coefficients :
$ operator not defined for this S4 class, returning NULL
> vcov(fit2)
lymax lxhalf
lymax 0.02857612 -0.04870231
lxhalf -0.04870231 0.11457338
> coef(fit2)
lymax lxhalf
3.218870 1.117006
And confint.default does indeed use the generic extractors vcov() and
coef().
Q: is this to be expected? and why? (I kind of suspect that this has in
fact been discussed a...
2007 Dec 06
1
suggested modification to the 'mle' documentation?
...5, 4, 8)
# Pass data via function arguments rather than global variables
ll.5 <- function(ymax=15, xhalf=6, x., y.)
-sum(stats::dpois(y., lambda=ymax/(1+x./xhalf), log=TRUE))
(fit.5 <- mle(ll.5, start=list(ymax=15, xhalf=6),
fixed=list(x.=x, y.=y)))
ll3 <- function(lymax=log(15), lxhalf=log(6), x., y.)
-sum(stats::dpois(y.,
lambda=exp(lymax)/(1+x./exp(lxhalf)), log=TRUE))
(fit3 <- mle(ll3, start=list(lymax=0, lxhalf=0),
fixed=list(x.=x, y.=y)))
2004 Dec 09
2
wishlist -- names gives slotnames (PR#7410)
Full_Name: Elizabeth Purdom
Version: 1.9.1
OS: Windows XP
Submission from: (NULL) (171.64.102.199)
It would be nice if names(obj) would give slot names as well. Since for many
people slots are new, the first thing that happens is you try to access what's
in them and can't find how to do it. If you don't know that slotNames() exists,
it can be very frustrating. Moreover, if you
2006 Jun 23
1
How to use mle or similar with integrate?
Hi
I have the following formula (I hope it is clear - if no, I can try to
do better the next time)
h(x, a, b) =
integral(0 to pi/2)
(
(
integral(D/sin(alpha) to Inf)
(
(
f(x, a, b)
)
dx
)
dalpha
)
and I want to do an mle with it.
I know how to use mle() and I also know about integrate(). My problem is
to give the parameter values a and b to the