[R] optimize

[peter dalgaard]

Yup. And books don't rewrite themselves when the software changes, so if things don't seem to work, check the _current_ documentation.

-pd


On 01 Oct 2014, at 21:53 , William Dunlap <wdunlap at tibco.com> wrote:

> Change your 'max=T' to 'maximum=TRUE'.  A long time ago the '...' in
> optimize's argument
> list was at the end, so you could abbreviate any of its argument
> names.  Now the '...' is the
> third formal argument, so all the trailing arguments meant for
> optimize itself must be fully
> spelled out.  Otherwise they get passed to f(), which is the cause of
> your error message.
> 
> (The T->TRUE is an independent issue - you may make a variable called
> 'T' that does not
> have the value TRUE, but you cannot mask TRUE.  TRUE is a literal
> value, like 123, not a
> variable.)
> 
> 
> Bill Dunlap
> TIBCO Software
> wdunlap tibco.com
> 
> 
> On Wed, Oct 1, 2014 at 11:20 AM, Nick gayeski
> <nick at wildfishconservancy.org> wrote:
>> Page 53 of Robert and Casella's "Use R" book, Introduction to Monte Carlo
>> Methods with R,  has the following code:
>> 
>> 
>> 
>> optimize(f=function(x){dbeta(x,2.7,6.3)},
>> 
>> + interval=c(0,1) ,max=T)$objective
>> 
>> 
>> 
>> This should return
>> 
>> [1] 2.669744
>> 
>> 
>> 
>> I run R from R Studio. When I enter this code I receive the following error
>> message: Error in f(arg, ...) : unused argument (max = TRUE)
>> 
>> 
>> 
>> Can someone help me understand why I get this error?
>> 
>> 
>> 
>> Thanks.
>> 
>> 
>> 
>> NickG
>> 
>> 
>>        [[alternative HTML version deleted]]
>> 
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com