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fr0zensphere
29 Posts |
 Posted - 03/28/2018 : 1:04:11 PM
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I'm on Origin Pro 2016, Win 10 x64. Please see the graph below. I tried to apply an exponential curve fit to all the data, but it's only fitting the black points and ignoring the red ones. How can I force it to fit all of the data to a single curve?
Here's the full-sized image:
https://s6.postimg.org/xuuajsv1d/ZQ19_2.png
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Edited by - fr0zensphere on 03/28/2018 1:05:38 PM |
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AmandaLu
439 Posts |
Posted - 03/28/2018 : 11:43:20 PM
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Hi,
To add multiple dataset to your fitting,
1. Open Nonlinear Curve Fit dialog. Select Data Selection page.
2. Click the triangle button to the right of Input Data branch and choose to add datasets from the fly-out menu. If you open Nonlinear Curve Fit tool from graph window, you can select Add all plots in active layer.
Thanks,
Amanda
OriginLab Technical Service
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Hideo Fujii
USA
1582 Posts |
Posted - 03/29/2018 : 11:07:06 AM
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Hi fr0zensphere,
Just an additional approach to the Amanda's way - looking at the screen shot of your graph, I thought you
might have possibly wanted to fit both BLACK data points and RED data points AS A WHOLE by a single
fit function. If this is the case, you can choose the "Concatenate Fit" option (instead of "Independent Fit").
You can see the option and the result shown below.
Hope this additional info also helps.
--Hideo Fujii
OriginLab
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fr0zensphere
29 Posts |
Posted - 03/29/2018 : 12:51:03 PM
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quote:
Originally posted by Hideo Fujii
Hi fr0zensphere,
Just an additional approach to the Amanda's way - looking at the screen shot of your graph, I thought you
might have possibly wanted to fit both BLACK data points and RED data points AS A WHOLE by a single
fit function. If this is the case, you can choose the "Concatenate Fit" option (instead of "Independent Fit").
Yes, of course! That's exactly what I wanted. I thought that was obvious from my post but I guess not. Thank you -- I was messing around with adding other data sets but didn't see the "concatenate fit" option. This is great; thanks again! |
Edited by - fr0zensphere on 03/29/2018 12:52:26 PM |
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Curve fit using only one of my data sets