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 Factorial function in origin		  New Topic  Reply to Topic
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Nilsdalby

Denmark
23 Posts
Posted - 09/18/2011 :  06:50:42 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Running OriginPro 8.1 on win 7

Hi

Im looking for a factorial function in origin for use in a fitting function to a binomial distribution. Earlier posts (2000 - 2005) claim its not in origin and give access to a script that i assume would work pooly in a compiler. Is there a factorial function somewhere, or how can i work around this ?

Thanks, Nils

Nilsdalby

Denmark
23 Posts
Posted - 09/18/2011 :  12:58:27 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
...of course, the gamma function can do this, gamma(x+1) - doh!
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Penn

China
644 Posts
Posted - 09/19/2011 :  02:28:50 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Nils,

You are right, you can use gamma() function now. In the coming version, Origin 8.6, the factorial function, fact(), will be available.

Penn
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Sam Fang

293 Posts
Posted - 09/19/2011 :  03:31:04 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
You needn't use factorial function. OriginC provides binocdf function to calculate binomial distribution for X<=k, X>k or X=k.

For more information, see the page.
http://ocwiki.originlab.com/index.php?title=OriginC:Binocdf_%28global_function%29

Sam
OriginLab Technical Services
Edited by - Sam Fang on 09/19/2011 03:31:46 AM
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