I am trying to analyze data that I recorded from the Force Sensitive Resistors (FSRs) coded on Arduino through data streamer on excel. I used four FSRs, so there are 4 columns of data over a set of time (1200 rows, about 15 seconds). I seperated time from the FSR data so that I can graph the FFT of the FSR data against the time.
I have made a different question which has been answered, but I was wondering if this method works as well.
Here is the code:
X = importdata('botdata.csv');
t = importdata('botdatatime.csv');
xabs = abs(xft);
This is what was displayed.
Now I don't know if it makes sense or not.
What is the meaning of the y axis?
Is this correct?