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data changes fast / Integration [message #85825]

Thu, 12 September 2013 02:07

fd_luni
Messages: 66
Registered: January 2013

Member

Hi all

I used trapezoidal rule so far to integrate my data but because my data changes really fast it gives me underestimation. I used something like this:

B1=TOTAL( (t[1:*]-t) * (A[1:*]+A) / 2.0 , /cumulative)

Does anyone know any other way to integrate when the data changes fast?

Many Thanks
Mar

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Re: data changes fast / Integration [message #85900 is a reply to message #85825]

Mon, 16 September 2013 12:58

Kenneth Bowman
Messages: 86
Registered: November 2006

Member

On 2013-09-12 09:07:46 +0000, fd_luni@mail.com said:

> Hi all
>
> I used trapezoidal rule so far to integrate my data but because my data
> changes really fast it gives me underestimation. I used something like
> this:
>
> B1=TOTAL( (t[1:*]-t) * (A[1:*]+A) / 2.0 , /cumulative)
>
> Does anyone know any other way to integrate when the data changes fast?
>
> Many Thanks
> Mar

Higher resolution or higher order.

Cheers, Ken Bowman

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