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 Origin 7.5 Extrapolation method		  New Topic  Reply to Topic
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fdolci

1 Posts
Posted - 09/04/2015 :  03:32:02 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. and Service Release : 7.5 SR6
Operating System: WINDOWS 7

Hi,

I am using an Origin 7.5 version and I exploited the Interpolate/Extrapolate feature under the Analysis menu.

I extrapolated some data, but I did not find any information on the method used. In later versions I think it is possible to directly choose the extrapolation/Interpolation method, but I have the feeling this is not the case for Origin 7.5.

Does anyone have more information about this feature? Is it a spline? If yes of which type?

Thank you very much

Francesco


Origin 7.5 Extrapolation method

Hideo Fujii

USA
1582 Posts
Posted - 09/04/2015 :  09:51:47 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Francesco,
The old Origin 7.5 provides, if I remember correctly, only the linear interpolation. The latest version of Origin provides much richer set of inter/extrapolation methods such as Cubic Spline, Cubic B-Spline, Akima Spline, as well as the trace interpolation, methods for 3D data, etc. See:

http://www.originlab.com/index.aspx?go=Products/Origin/DataAnalysis/Mathematics/InterpolationAndExtrapolation

--Hideo Fujii
OriginLab
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