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- Saving Multiple Equation Coefficients?

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Jun 16, 2016 6:00 AM
(3620 views)

Hi:

I am aware of saving prediction equations in the Fit Model platform, copying the parameters from the Fit Y by X platform, and displaying the equations from fitted lines on Graph Builder ... but none of those really meet my need.

What I am trying to do is to save - either to the data table or anywhere else - the fitting equations for multiple fits. For example, I could be fitting amount of material added against titration volume for multiple instruments or operators, and would like to obtain the coefficients for those fits easily.

For one or a few items it is trivial to just grab the coefficients ... but for many elements it becomes cumbersome. And right now we are executing a series of experiments where the number of fitted lines could vary from 10 - 30 (per experiment), and as a result it is not so easy to just copy or re-type.

Any thoughts on what I am missing?

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Jun 16, 2016 7:17 AM
(6424 views)

Hello,

Based on your explanation above I think you want to use "Make a Combined Data Table" function after you do your fits.

Make the fits for multiple instruments or operators and then in the Parameter Estimates area right click and select "Make a Combined Data Table"

This will output a new table with all of the data in the parameter estimates for all the fits.

I only did it for 2 fit models, but it should work for as many models as you build.

HTH

Bill

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Jun 16, 2016 7:14 AM
(3528 views)

I'm not sure how your data is organised, but if you are using a 'By' variable with 'Fit Model' (to get one fit for each level of that variable), you can just right click on one of the tables and select 'Make Combined Data Table'.

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Jun 16, 2016 7:17 AM
(6425 views)

Hello,

Based on your explanation above I think you want to use "Make a Combined Data Table" function after you do your fits.

Make the fits for multiple instruments or operators and then in the Parameter Estimates area right click and select "Make a Combined Data Table"

This will output a new table with all of the data in the parameter estimates for all the fits.

I only did it for 2 fit models, but it should work for as many models as you build.

HTH

Bill

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Jun 16, 2016 8:51 AM
(3528 views)

Thanks Ian and Bill ... I can't believe I blanked on that after using it so much in the past!