FFT to a simple sine wave

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Arbab 2024-4-22

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https://ww2.mathworks.cn/matlabcentral/answers/2110321-fft-to-a-simple-sine-wave

回答： Star Strider 2024-4-22

I have a simple text file with two columns, amplitude and time steps values. i want to apply fft to the signal so that output should look like attached picture. consider just one waveform.

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Dyuman Joshi 2024-4-22

What have you tried yet?

What issues are you facing?

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Star Strider 2024-4-22

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2110321-fft-to-a-simple-sine-wave#answer_1445936

I am not certain what the independent variable axis is (the label is cut off), however if you want a power spectral density plot, use the pwelch function.