[R] Negative exponential fit

[Uwe Ligges]

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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