Curve fit tool and log scale

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Hye Rim
Hye Rim 2011-5-26
编辑： Igor Gitelman 2021-7-31
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

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Arnaud Miege
Arnaud Miege 2011-5-26
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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armin farshbaf
armin farshbaf 2017-6-10
this way you could only get at base 10 logarithm, do u have any idea for base 2 ?!
Igor Gitelman
Igor Gitelman 2021-7-31
编辑：Igor Gitelman 2021-7-31
just take
log2(x)
from yor data - x.

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更多回答（1 个）

Laura Proctor
Laura Proctor 2011-5-26
I think you're looking for the function SEMILOGX.

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