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 fixed fit parameter forced to zero		  New Topic  Reply to Topic
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brhann

2 Posts
Posted - 05/28/2013 :  10:33:51 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Ver. and Service Release: OriginPro 8 SR4 v8.0951
Operating System: windows XP

I'm using a user-defined function to fit data. I have two parameters in the function that I would like to fit to ~1e-10. When I fix these parameters, their values are set to zero after saving the function. While the values are small, it's essential that I account for them to make sense of the data. Can I tell Origin to stop forcing these values to zero?

meili_yang

103 Posts
Posted - 05/28/2013 :  11:31:24 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi,

When I input as 0.000000001 I can set the value fixed to E-10. Let me know if it helps.





Meili
OriginLab
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brhann

2 Posts
Posted - 05/28/2013 :  11:50:44 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
quote:
Originally posted by meili_yang

Hi,

When I input as 0.000000001 I can set the value fixed to E-10. Let me know if it helps.





Meili
OriginLab


Thanks for the reply, Meili.
The smallest value that will save with the function is 1e-6. When I enter 0.0000001 or 1E-7 (or any smaller value), the parameter is set to zero again. Maybe it is the version of Origin that I am working with.
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