On 11-11-30 11:32 AM, peter dalgaard wrote:
>
> On Nov 29, 2011, at 23:19 , Ben Bolker wrote:
>
>> rch4 geneseo.edu> writes:
>>
>>>
>>> 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
>>>
On Nov 29, 2011, at 23:19 , Ben Bolker wrote:
> rch4 geneseo.edu> writes:
>
>>
>> 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 expone
Thanks Peter, will take a look at this package.
Regards,
Indrajit
From: Peter Ruckdeschel
To: r-h...@stat.math.ethz.ch
Sent: Wednesday, November 30, 2011 5:03 PM
Subject: Re: [R] Negative exponential fit
I do not want to shed out any doubt as to the merits
rch4
> To: r-help@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
ship with R.
Best,
Uwe
Regards,
From: Uwe Ligges
To: Indrajit Sengupta
Cc: "r-help@r-project.org"; rch4
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
, 2011 8:37 AM
Subject: Re: [R] Negative exponential fit
Thank you for your suggestions. We are currently working with an the nls
function, but are having trouble getting a curve that fits our data. We have
tried using the following formula:
mod1 = nls(time~a*exp(b*(date)), start=list(a=4.178,b=-1.18
ing it the *default* ... who defined that?
Best,
Uwe Ligges
>
> Regards,
> Indrajit
>
>
>
>
> From: rch4
> To: r-help@r-project.org
> Sent: Tuesday, November 29, 2011 8:39 AM
> Subject: [R] Negative exponential fit
>
> We
Thank you for your suggestions. We are currently working with an the nls
function, but are having trouble getting a curve that fits our data. We have
tried using the following formula:
mod1 = nls(time~a*exp(b*(date)), start=list(a=4.178,b=-1.18))
av=mdate
bv=predict(mod1,list(mdate=av))
length(av)
rch4 geneseo.edu> writes:
>
> 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
fined that?
Best,
Uwe Ligges
Regards,
Indrajit
From: rch4
To: r-help@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
wo
What have you tried so far - can you explain? "fitdistrplus" package is the
default package for fitting distributions.
Regards,
Indrajit
From: rch4
To: r-help@r-project.org
Sent: Tuesday, November 29, 2011 8:39 AM
Subject: [R] Negative exponentia
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
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