Asked by Tesa
on 25 Jan 2013

Hey, I am a newbie in MATLAB, wanna ask a question: I have a data of frequency (column 1) and the impedance (column 2), and I did multiple measurements, let's say 5 measurements.

I want to plot the graph of the average value of the impedance in each frequency. I tried to find the mean of it, but it turns out that the coding I did find the average of the whole impedance (so i only got 1 average value, it's suppose to be 1 average value for each frequency).

Can somebody help me with the code? I use the .txt files as the data source, by the way.

Thank you for the help.

Answer by Evgeny Pr
on 25 Jan 2013

Edited by Evgeny Pr
on 25 Jan 2013

Accepted Answer

frequency = [1, 2, 3, 4, 5, 6]

impedance = [6 2 7 5 6 7

10 9 5 1 7 9

7 8 4 7 4 3

6 2 4 6 7 2

2 2 10 4 10 11]

meanImpedance = mean(impedance, 1) % Rows - measurements

plot(frequency, meanImpedance)

Tesa
on 25 Jan 2013

thanks! :D you help a lot :)

Tesa
on 28 Jan 2013

Tesa
on 28 Jan 2013

and also, what does this one mean? meanImpedance = mean(impedances, 2); Thanks!

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