How can I plot first harmonic wave from a wave data (Excel)
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How can I plot first harmonic wave from a wave data (Excel)?
I have the following plot from an excel file data (attached).
I need only a wave plot of 1st harmonic of the main wave (shown above).
Thank you
回答（2 个）
Yash Srivastava
2023-3-23
Hi Hesham,
In my understanding you need to plot data in 'waves.csv' in MATLAB.
For this you can use 'readtable' function to read data in MATLAB and plot the data using 'plot' function.
data=readtable('wave.csv');
plot(data, "Var1", "Var2")
Since no header is provided in .csv file, MATLAB assigns defaultvariable names, "Var1" and "Var2", to the column.
Please refer to the following documentation for more info on 'readtable'.
Thanks
Vishwa
2023-3-24
Hi Hesham,
MATLAB provides Curve Fitting Toolbox™ which has a fit type with fourier series. For only fundamental component, you can restrict the number of terms in the dialogue box to just 1.
Following MATLAB documentation might be helpful.
openExample('curvefit/FitFourierModelsInteractivelyInCurveFitterAppExample')
Thanks.
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