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| Re: Interpolate with findex no longer faster than interpol? [message #55321 is a reply to message #55317] |
Sat, 11 August 2007 13:33  |
Trae
Messages: 23
Registered: May 2007
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Junior Member |
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On Aug 11, 12:30 pm, David Fanning <n...@dfanning.com> wrote:
>
> According to the INTERPOL documentation, the program was speeded
> up by a factor of more than 100 by changes occurring in 1998 and 1999.
> This would be after the "fast interpolation" article on my web page
> was written in 1997. I guess it's time to "retire" that web page. :-)
Ah-ha! I should have read the program's header instead of just the
entry in the IDL help page.
Thanks,
-Trae
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| Re: Interpolate with findex no longer faster than interpol? [message #55322 is a reply to message #55321] |
Sat, 11 August 2007 11:30 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Trae writes:
> The results:
> To my surprise the straight call to interpol alone won hands down
> every time! The header for the findex routine states that using
> findex in conjunction with interpolate can yield a factor of 60
> increase of efficiency over using interpol alone. A factor of 70 is
> stated on David Fanning's amazingly helpful website. However, this
> now longer seems to be the case.
According to the INTERPOL documentation, the program was speeded
up by a factor of more than 100 by changes occurring in 1998 and 1999.
This would be after the "fast interpolation" article on my web page
was written in 1997. I guess it's time to "retire" that web page. :-)
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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