MATLAB: Curve fit tool and log scale

curve fittingCurve Fitting Toolboxlog

Hello!

I have a series of data and using the custom equation, I could fit the data on the theoritical equation. I would like to see the graph and fit curve in log scale but I don't know I to change the x values in log scale. Coyuld you please let me know how to do it? Haev a nice day!

Hye Rim

Best Answer

From the curve fitting tool, once you're done with the fitting, click on File -> Generate Code to generate the MATLAB code for your fit. You can then run that code with whatever data you want, but more to the point you can also modify it. Find the part of the code where the plotting is done, and replace the plot command by semilogx, as Laura suggested.

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MATLAB: Retrieve the figure from the surface fitting tool

If you generate code from your fit, and then run that code, it will produce the same set of plots that you originally had but in a standard MATLAB figure.

In Surface Fitting Tool, select File->Generate Code.
Save the file that this produces in the editor (it defaults to "createFit").
In the Command Window, run the file you saved, using the same variables that you used for the fit:

createFit(myXData, myYData, myZData)

This will create a figure and from here you can use any of the normal export tools for capturing an image, e.g. Edit->Copy Figure or File->Save As.

Best Answer

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