How to plot multiple values of a variable in one graph?
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I put 5 txt files into a loop to graph the FFT and PDS continuously. They are audio files converted to txt files. I used "findpeaks" to find all peaks in the graphs. I then used "max" to find the max peak in each of the 5 graphs. I got 5 answers for the same variable. (l=max(v)). How do I plot all of these answers in one graph? Below is an example of my work. Here is the values I received for the max for each graph, l = 7.1537e+08, l = 1.3054e+09, l = 2.4736e+09, l = 3.4960e+09, l = 2.4039e+09
numfiles = 5;
y = cell(1, numfiles);
for k = 1:numfiles
myfilename = sprintf('file%d.txt', k);
y{k} = importdata(myfilename);
plot(y{k})
m=(abs(fft(y{k})));
%n=m(1:y{k}/2);
%plot(n);
pwelch(y{k})
v= pwelch(y{k})
plot(v)
xlim([0 4000])
findpeaks(v)
l= max(v)
end
2 commentaires
Matt Dickson
le 12 Juin 2018
To clarify, you want to plot the maximum value (you call it l). What are you plotting it against? Index of the file?
Réponses (2)
Arun Mathamkode
le 15 Juin 2018
I believe you want to plot the maximum value for each graph against the index file. You can simply store maximum values in l as an array and plot the array.
In the loop, change l=max(v) to l(k)=max(v) and use plot(l) after the loop.
2 commentaires
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