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Re: Numerical integration [message #56803 is a reply to message #56801]

Thu, 15 November 2007 13:00

wlandsman
Messages: 743
Registered: June 2000

Senior Member

On Nov 15, 2:58 pm, tarequea...@gmail.com wrote:
> Hello Gurus,Pundits& Bosses of IDL,
>
> Need help on 'int_tabulated'. One of the array has duplicate
> elements(=same elements) and thus int_tabulated refuses to move any
> further.
>
> Is there any way out?

So you have a jump in your function (where Y changes but X stays the
same)? INT_TABULATED won't like this because it interpolates the
data, and your function is not smooth. You could try just a
simple trapezoidal integration, such as in the function
http://idlastro.gsfc.nasa.gov/ftp/pro/math/tsum.pro

--Wayne

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[Message index]

		Re: Numerical integration By: Jean H. on Thu, 15 November 2007 13:37
		Re: Numerical integration By: wlandsman on Thu, 15 November 2007 13:00
		Re: Numerical integration By: Paul Van Delst[1] on Thu, 15 November 2007 12:55

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