Plotting RMS from .csv files

I have data in the csv format that I'm plotting it using the lines of code below. The data has 2 columns and 1048576 rows. I have uploaded part of it below- the actual files being too large. Can you please tell me how to plot the RMS of the data?

if true clear all Array=csvread('Pencilbreak-63dB.csv'); col1 = Array(:, 1); col2 = Array(:, 2); plot(col1, col2) end

Answer 1

[Dishant Arora]

RMS = (sum(col2.^2)/length(col2))^0.5;

[Win]

I need to plot the RMS signal of the waveform, not just find the RMS value.

[Dishant Arora]

RMS is scalar not a vector, anyways you can plot it for whole length of signal:

plot(1:length(col1),RMS)

[Win]

Do you mean I should add the following 2 lines of code?

" clear all

Array=csvread('Pencilbreak-23dB.csv');

col1 = Array(:, 1);

col2 = Array(:, 2);

RMS = (sum(col2.^2)/length(col2))^0.5;

plot(1:length(col1),RMS) " ?

MATLAB is not giving me the graph I expect to get?

[Dishant Arora]

what do you want??

[Win]

An illustration of what I need:

[Dishant Arora]

you aredoing windowing there,taking smallportions of the data and then calculating RMS.

[Dishant Arora]

you can do something like:

clear all; Array=csvread('Pencilbreak-63dB.csv');
col1 = Array(:, 1); col2 = Array(:, 2); plot(col1, col2)
window = 20;
for i=1:window:length(col1)

    RMS(i:i+window-1) = (sum(col2(i:i+window-1).^2)/10)^0.5;
end
plot(col1,RMS)

[Dishant Arora]

window size may vary asper the need

[Win]

ok, thanks a lot.