It works under the versions 7.2-0 dated Jan 22 or later: that on CRAN is
dated Jan 14 and predates 7.1-14.
Since R-devel is `under development', the pieces are not at all times in
sync.
On 18 Feb 2004, Peter Dalgaard wrote:
Prof Brian Ripley [EMAIL PROTECTED] writes:
Which version of
On Tue, 2004-02-17 at 18:59, Prof Brian Ripley wrote:
Which version of MASS (not that you gave me any credit)? This works in
the current 7.1-14.
On Tue, 17 Feb 2004, Ernesto Jardim wrote:
I'm trying fitdistr but I'm getting some errors
fitdistr(rnorm(100),Normal)
Error in
On Wed, 18 Feb 2004, Ernesto Jardim wrote:
On Tue, 2004-02-17 at 18:59, Prof Brian Ripley wrote:
Which version of MASS (not that you gave me any credit)? This works in
the current 7.1-14.
On Tue, 17 Feb 2004, Ernesto Jardim wrote:
I'm trying fitdistr but I'm getting some errors
Prof Brian Ripley [EMAIL PROTECTED] writes:
It works under the versions 7.2-0 dated Jan 22 or later: that on CRAN is
dated Jan 14 and predates 7.1-14.
Since R-devel is `under development', the pieces are not at all times in
sync.
OK. I'm still picking up the older version from CRAN on
On 18 Feb 2004, Peter Dalgaard wrote:
Prof Brian Ripley [EMAIL PROTECTED] writes:
It works under the versions 7.2-0 dated Jan 22 or later: that on CRAN is
dated Jan 14 and predates 7.1-14.
Since R-devel is `under development', the pieces are not at all times in
sync.
OK. I'm
Hi,
I'm trying fitdistr but I'm getting some errors
fitdistr(rnorm(100),Normal)
Error in fitdistr(rnorm(100), Normal) : 'start' must be a named list
fitdistr(rnorm(100),Normal,start=list(mean=0,sd=1))
Error in fitdistr(rnorm(100), Normal, start = list(mean = 0, sd = 1))
:
supplying
Which version of R and the MASS library? It worked for me just
now with R 1.8.1:
library(MASS)
fitdistr(rnorm(100),Normal,start=list(mean=0,sd=1))
mean sd
0.03760724 0.97053743
(0.09705374) (0.06862975)
hope this helps. spencer graves
Ernesto Jardim wrote:
Which version of MASS (not that you gave me any credit)? This works in
the current 7.1-14.
On Tue, 17 Feb 2004, Ernesto Jardim wrote:
I'm trying fitdistr but I'm getting some errors
fitdistr(rnorm(100),Normal)
Error in fitdistr(rnorm(100), Normal) : 'start' must be a named list
Prof Brian Ripley [EMAIL PROTECTED] writes:
Which version of MASS (not that you gave me any credit)? This works in
the current 7.1-14.
Odd things are happening for me with r-devel, though:
library(MASS)
fitdistr(rnorm(100),Normal)
Error in dn[[2]] : subscript out of bounds
rbeta(100,0.1,0.1) is generating samples which contain 1, an impossible
value for a beta and hence the sample has an infinite log-likelihood.
It is clearly documented on the help page that the range is 0 x 1.
However, that is not so surprising as P(X 1-1e-16) is about 1% and hence
values will
My standard work-around for the kind of problem you identified is to
shrink the numbers just a little towards 0.5. For example:
library(MASS)
a - rbeta(100,0.1,0.1)
fitdistr(x=a, beta, start=list(shape1=0.1,shape2=0.1))
Error in optim(start, mylogfn, x = x, hessian = TRUE, ...) :
In this example shrinking by (1 - 2e-16) leads to a significant change in
the distribution: see my probability calculation. And you can't shrink by
much less. A beta(0.1, 0.1) is barely a continuous distribution.
On Fri, 4 Jul 2003, Spencer Graves wrote:
My standard work-around for the kind
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