The power trendline does not work correctly.

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Power Trend line equation has the form y=ax^b, but in MATLAB Online it always appear a=b.
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Guilherme
Guilherme 2024-10-1
Hi guys, thanks for the comments. I've been doing several simulations in MATLAB Online and whenever I try to use a power trend line, the equation appears with the coefficients a and b equal. In the case of the photo, the data for this example is stored in the MAT file XYData.mat. The trend line is correct, but it seems like there is a bug in the equation.

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Cris LaPierre
Cris LaPierre 2024-10-1
I do not think the issue is related to using Simulink Online. I get the same result in simulink, whether I'm using the desktop or online version. I do get a different result between the Curve Fitter App in MATLAB and the SDI trendline. I think this is a bug and will report it. In the meantime, you could use the Curve Fitter app in MATLAB.

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