On 21/09/2010 1:29 PM, baptiste auguie wrote:
I see, thank you.
I'm still worried by the very dramatic error I obtained just from
shifting so slightly the support of the integrand, it took me a while
to figure what happened even with this basic example (I knew the
integral couldn't be so small!
I see, thank you.
I'm still worried by the very dramatic error I obtained just from
shifting so slightly the support of the integrand, it took me a while
to figure what happened even with this basic example (I knew the
integral couldn't be so small!).
For a general integration in [0, infty), ther
On Tue, 21 Sep 2010, baptiste Auguié wrote:
Thanks, I'll do that too from now on.
It strikes me that in a case such as this one it may be safer to use a
truncated, finite interval around the region where the integrand is non-zero,
rather than following the advice of ?integrate to use Inf as in
)
> plot(shift, sapply(shift, shiftedGauss))
>
>
> Hope this helps,
> Ravi.
>
> -----Original Message-----
> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
> Behalf Of baptiste auguie
> Sent: Tuesday, September 21, 2010 8:38 AM
>
half Of baptiste auguie
Sent: Tuesday, September 21, 2010 8:38 AM
To: r-help
Subject: [R] puzzle with integrate over infinite range
Dear list,
I'm calculating the integral of a Gaussian function from 0 to
infinity. I understand from ?integrate that it's usually better to
specify Inf expli
ilto:r-help-boun...@r-project.org] On
> Behalf Of baptiste auguie
> Sent: Tuesday, September 21, 2010 8:38 AM
> To: r-help
> Subject: [R] puzzle with integrate over infinite range
>
> Dear list,
>
> I'm calculating the integral of a Gaussian function from 0 to
>
ct.org] On
> Behalf Of baptiste auguie
> Sent: Tuesday, September 21, 2010 8:38 AM
> To: r-help
> Subject: [R] puzzle with integrate over infinite range
>
> Dear list,
>
> I'm calculating the integral of a Gaussian function from 0 to
> infinity. I understand from
ct: [R] puzzle with integrate over infinite range
Dear list,
I'm calculating the integral of a Gaussian function from 0 to
infinity. I understand from ?integrate that it's usually better to
specify Inf explicitly as a limit rather than an arbitrary large
number, as in this case integr
Dear list,
I'm calculating the integral of a Gaussian function from 0 to
infinity. I understand from ?integrate that it's usually better to
specify Inf explicitly as a limit rather than an arbitrary large
number, as in this case integrate() performs a trick to do the
integration better.
However,
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