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shausfel

Germany
Posts
Posted - 11/14/2005 :  04:15:06 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Version (Select Help-->About Origin): 6.0
Operating System: Win 2000

Hi!

I want to fit my experimental data with a formula containing the Legendre polynomial of the first and second kind. But I can not find them in the fitting toolbox. So, can anybody help me please?

Thx
shausfel

Mike Buess

USA
3037 Posts
Posted - 11/14/2005 :  10:42:46 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi shausfel,

I'm afraid there is no Legendre function in Origin 6.0. However, 7.0 and higher have the nag_legendre_p approximation. You might try the 7.5 Demo but I'm not sure it includes the NAG libraries...

http://www.originlab.com/index.aspx?s=12&lm=62

Mike Buess
Origin WebRing Member
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Barb Tobias

USA
305 Posts
Posted - 11/14/2005 :  12:50:43 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
The Origin 7.5 demo does include the NAG libraries.
To try this out, you can download and install the Origin 7.5 demo.
Then run Help:Check for Updates to get the Help files.
To learn how to access the nag_legendre_p function from Origin C, select Help:Programming. Then activate the Help Index tab and type in: nag_legendre_p
The documentation includes example Origin C code.
-Barb Tobias
OriginLab Technical Support
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fzimnoch

USA
28 Posts
Posted - 11/18/2005 :  4:36:05 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Shausfel:

You requested Legendre functions of the SECOND kind. These are not given in the NAG function nag_legendre_p which only produces functions of the FIRST kind.

However, the functional form for Legendre functions of the SECOND kind are listed on the WEB and can be easily programmed in Origin.

Hope this helps.

FRED
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