Plot vectors in cell array over for loop

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skrowten_hermit
skrowten_hermit 2020-10-12
评论： skrowten_hermit 2020-10-12
I have the following data structure (a cell array populated with vectors):
sigvecarray = {};
freqarray = {};
% Reading the audio files, getting the signal vector and the corresponding
for k = 1:numel(inputarray) % indices
curr_input = inputarray{k};
[y, Fs] = audioread(curr_input);
sigvecarray{k} = y;
freqarray{k} = Fs;
end
I'm trying to plot them over a for loop by using the following:
for k = 1:numel(sigvecarray)
plot(sigvecarray{k})
end
But I get only the fist vector plotted as my output. What could I be doing wrong here? Is it because the cell array is a row vector? If yes, how do I convert the cell array to a column vector from a row vector?

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KSSV
KSSV 2020-10-12
figure
hold on
for k = 1:numel(sigvecarray)
plot(sigvecarray{k})
end
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skrowten_hermit
skrowten_hermit 2020-10-12
I had tried out subplots before. They seem to shrink the plots to fit the screen when I do:
for k = 1:numel(sigvecarray)
subplot(length(sigvecarray), 1, k)
plot(sigvecarray{k})
end
Is there a way to decide the size (in pixels for example) of each plot? Say 640x480 or something like that?
KSSV
KSSV 2020-10-12
Possible you need to set the size of whole figure etc....read the doc.

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更多回答（1 个）

Ameer Hamza
Ameer Hamza 2020-10-12
编辑：Ameer Hamza 2020-10-12
Read about hold function(): https://www.mathworks.com/help/matlab/ref/hold.html.
hold on
will add new lines on the same axes without deleting old lines.
Also see subplot(): https://www.mathworks.com/help/matlab/ref/subplot.html
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Ameer Hamza
Ameer Hamza 2020-10-12
You need to use the Position property of the axes object to change their size. An alternative might be to use
nexttile(): https://www.mathworks.com/help/matlab/ref/nexttile.html. Though I am not sure if there is a significant difference.

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