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Hamed_sbri
Iran
6 Posts |
 Posted - 01/15/2024 : 2:05:50 PM
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Hi. I have 600 different curves. I need obtain y from X for unknown periods of these data`s. I know that my solution is fitting, but for best result, i need to obtain best fit function and this way is wery long for 600 curevs. Can I solve my problem with little and better ways. For example, I think that, I can use spline or B-spline for my solution.
I need your helps  |
Edited by - Hamed_sbri on 01/15/2024 2:22:12 PM |
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snowli
USA
1379 Posts |
Posted - 01/15/2024 : 2:30:42 PM
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If you just want to find interpolation value, you can use column formula.
For A(X), B(Y) data
Put new X values you want to calculate in column C.
For Column C, enter B(C) as formula to do interpolation.
If you have other curves in other columns, u can do them similarly.
Also if you plot all curves, you can choose Gadget:Vertical Cursor.
Move cursor to each X position and click Output Report to collect Ys of each curve for given X position.
Thanks, Snow
Thanks, Snow
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Hamed_sbri
Iran
6 Posts |
Posted - 01/15/2024 : 2:47:16 PM
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Thanks for your answer. I test f(X) way. I hope it will answer, Because I have been looking for a solution for a long time.
I test vertical cursor but i conclude that, this method give me just know data's and don't work for unknown data's. |
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snowli
USA
1379 Posts |
Posted - 01/15/2024 : 3:05:38 PM
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You can also try Analysis: Mathematics: Interpolate/Extrapolate Y from X...
We improved it in Origin 2024 so that multiple curves can be processed together. See this video
https://www.youtube.com/watch?v=INvJ3XO1xxY&t=43s
Thanks, Snow |
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Hamed_sbri
Iran
6 Posts |
Posted - 01/15/2024 : 3:23:12 PM
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Very thanks.
I will try your solutions.
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Fitting