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AKazak
Russia
1205 Posts |
 Posted - 06/01/2022 : 10:08:02 AM
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OriginPro 2022b (64-bit) SR1 9.9.5.167
Windows 7 Pro SP1 x64
Greetings!
I want to fit my data with a power function y=x^(-a), where a is non-negative. If I choose standard Power, which is y=x^a, then I don't get the desired solution (a is always positive).
I couldn't find y=x^(-a) from the standard catalogue @ https://www.originlab.com/doc/Origin-Help/Curve-Fitting-Function.
What would you suggest me to do to limit value of the parameter a to the desired range?
Thank you.
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Andrey |
Edited by - AKazak on 06/01/2022 10:08:50 AM |
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Shirley_GZ
China
Posts |
Posted - 06/02/2022 : 01:50:20 AM
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Hi Andrey,
You can set the upper bound for the parameter "a" in function Power.
If needed, you might need to give a more appropriate inital value for "a".
Thanks,
Shirley
Originlab Technical Service Team |
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AKazak
Russia
1205 Posts |
Posted - 06/02/2022 : 01:59:58 AM
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quote:
Originally posted by Shirley_GZ
Hi Andrey,
If needed, you might need to give a more appropriate initial value for "a".
Thanks,
Shirley
Originlab Technical Service Team
Dear Shirley,
How do I give a more appropriate initial value for "a"?
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Andrey |
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Topic |
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Quick Fit Gadget: limiting parameter values