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 Is there step function in Origin		  New Topic  Reply to Topic
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elfine

China
9 Posts
Posted - 12/09/2009 :  9:23:34 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver.8.0 and Service Release (Select Help-->About Origin): v8.0725
Operating System:windows xp

Is there step function in origin 8.0?

I want fit my curve with multi-segment function.

Thanks!

fisher_zhang

China
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Posted - 12/10/2009 :  01:20:45 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

You can try to create a user-define fitting function

http://wiki.originlab.com/~originla/howto/index.php?title=Tutorial:Fitting_with_Piecewise_Functions

But that depends on your data, in some case, the least squares fitting is not able to find an approximation for a step due to the discontinuity.

Fisher
Edited by - fisher_zhang on 12/10/2009 04:37:17 AM
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