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 Piecewise fitting with more than three segments		  New Topic  Reply to Topic
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meike_h

5 Posts
Posted - 01/23/2023 :  08:34:33 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. and Service Release (Select Help-->About Origin): 2023
Operating System: Windows

Hi,

I would like to perform linear piecewise fitting of a graph with five segments. Is it possible to use the piecewise app and select piecewise function for one of the segments? I haven't gotten it to work yet. Alternatively, how could I best use the user-defined fitting function for this?

Thanks,
Meike

YimingChen

1653 Posts
Posted - 01/23/2023 :  09:15:40 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
You have to define your own piecewise fitting function of 5 segments by following the definition of 3 segments function.
https://www.originlab.com/doc/Origin-Help/PWL3

To define your own fitting function, please refer to this page:
https://www.originlab.com/doc/en/Tutorials/Fitting-Piecewise-Linear

James
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