comp.lang.idl-pvwave archive: archive » replace integration by summation

Home » Public Forums » archive » replace integration by summation

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

replace integration by summation [message #84904]

Tue, 18 June 2013 03:36

fd_luni
Messages: 66
Registered: January 2013

Member

Hi,
I've been trying to replece the INT_TABULATED by total but the answer is very different and I don't see why.

integration: A2= INT_TABULATED(t[0:i], A1[0:i])

summation: A2 = (t[1]-t[0])*total(A1,/cumulative)

I haven't been able to find out what is going wrong because these two commands seems similar to me and I didn't expect to get so wrong results. Can anyone help?

With Thanks
Maria

Report message to a moderator

[Message index]

		replace integration by summation By: fd_luni on Tue, 18 June 2013 03:36
		Re: replace integration by summation By: Helder Marchetto on Tue, 18 June 2013 03:56
		Re: replace integration by summation By: fd_luni on Tue, 18 June 2013 07:13
		Re: replace integration by summation By: Craig Markwardt on Tue, 18 June 2013 09:04
		Re: replace integration by summation By: Phillip Bitzer on Tue, 18 June 2013 09:17
		Re: replace integration by summation By: David Fanning on Tue, 18 June 2013 09:37
		Re: replace integration by summation By: Phillip Bitzer on Tue, 18 June 2013 11:46
		Re: replace integration by summation By: David Fanning on Tue, 18 June 2013 11:56
		Re: replace integration by summation By: David Fanning on Tue, 18 June 2013 11:59
		Re: replace integration by summation By: fd_luni on Wed, 19 June 2013 02:01
		Re: replace integration by summation By: Paul Van Delst[1] on Wed, 19 June 2013 05:08
		Re: replace integration by summation By: fd_luni on Wed, 19 June 2013 05:55
		Re: replace integration by summation By: Mats Löfdahl on Wed, 19 June 2013 06:02
		Re: replace integration by summation By: fd_luni on Wed, 19 June 2013 06:09
		Re: replace integration by summation By: Craig Markwardt on Wed, 19 June 2013 09:29
		Re: replace integration by summation By: fd_luni on Wed, 19 June 2013 13:05
		Re: replace integration by summation By: Phillip Bitzer on Wed, 19 June 2013 14:04
		Re: replace integration by summation By: Paul Van Delst[1] on Wed, 19 June 2013 14:20
		Re: replace integration by summation By: Craig Markwardt on Wed, 19 June 2013 21:06
		Re: replace integration by summation By: fd_luni on Thu, 20 June 2013 03:12
		Re: replace integration by summation By: fd_luni on Thu, 20 June 2013 04:10
		Re: replace integration by summation By: Phillip Bitzer on Thu, 20 June 2013 09:28
		Re: replace integration by summation By: Paul Van Delst[1] on Thu, 20 June 2013 07:11
		Re: replace integration by summation By: Fabzi on Tue, 18 June 2013 09:42
		Re: replace integration by summation By: Phillip Bitzer on Tue, 18 June 2013 11:47

Previous Topic:	convert .dat to .fits
Next Topic:	GRID3 Problems

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 18:36:02 PDT 2025

Total time taken to generate the page: 0.00382 seconds