[R] Negative exponential fit

[Uwe Ligges]

On 30.11.2011 07:25, Indrajit Sengupta wrote:
> Agreed, nobody has deemed it "default", but is there any other such package that you can think of for this purpose.

Not that I know. Suggesting it is perfect. I'd just not call any package 
a "default" if it does not ship with R.

Best,
Uwe




>
>
> Regards,
>
>
>
> ________________________________
>   From: Uwe Ligges<ligges at statistik.tu-dortmund.de>
> To: Indrajit Sengupta<indra_calisto at yahoo.com>
> Cc: "r-help at r-project.org"<r-help at r-project.org>; rch4<rch4 at geneseo.edu>
> Sent: Tuesday, November 29, 2011 7:33 PM
> Subject: Re: [R] Negative exponential fit
>
>
>
> On 29.11.2011 07:06, Indrajit Sengupta wrote:
>> What have you tried so far - can you explain? "fitdistrplus" package is the default package for fitting distributions.
>
> It is a contributed packages, and perhaps it is a good one (I do not
> know), but calling it the *default* ... who defined that?
>
> Best,
> Uwe Ligges
>
>
>>
>> Regards,
>> Indrajit
>>
>>
>>
>> ________________________________
>>     From: rch4<rch4 at geneseo.edu>
>> To: r-help at r-project.org
>> Sent: Tuesday, November 29, 2011 8:39 AM
>> Subject: [R] Negative exponential fit
>>
>> We need help....
>>
>> We are doing a project for a statistical class in and we are looking at
>> world record times in different running events over time. We are trying to
>> fit the data with a negative exponential but we just cant seem to get a
>> function that works properly.
>> we have on our x-axis the date and on the y-axis the time(in seconds). So as
>> you can imagine, the times have decreased and appear to be approaching a
>> limit. Any ideas for a nls function that would work for us would be greatly
>> appreciated.
>>
>> Rob
>>
>> --
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