Converting Time vs Voltage to Frequency vs Voltage

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Janani Baskaran on 3 Nov 2016

Answered: Star Strider on 3 Nov 2016

I have an excel sheet containing the time in first column and voltage in second column for a filter.

I would like to plot this data in the form of Frequency vs Voltage ie the voltage given in the excel sheet.

How can I do this in MatLab?

KSSV on 3 Nov 2016

What is time in the first column?

Star Strider on 3 Nov 2016

Use the xlsread function to import your data into your MATLAB workspace.

See the documentation for fft (link), specifically the code between the first (top) two plot figures.

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