How to perform data analysis on each column of matrix individually and plot each column individually?

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Nariç Durmus
Nariç Durmus 2016-12-14
编辑： José-Luis 2016-12-14
I have a matrix of 20000 X 176 I want to perform data analysis of each column individually and plot each column individually. Is there a fast way to do this.
This is my data analysis (with lead53 = column 53)
if true
lead53 = data.signals(:,53);
dlead53 = gradient(lead53(:,1))/(1/fs)
ch1 = zeros (length(lead53(:,1)),1);
for n = 1: length(lead53);
if dlead53(n) > 500 %select pacing spikes
ch1(n-3) = lead53(n-3);
ch1(n-2) = lead53(n-2);
ch1(n-1) = lead53(n-1);
ch1(n) = lead53(n);
ch1(n+1) = lead53(n+1);
ch1(n+2) = lead53(n+2);
ch1(n+3) = lead53(n+3);
end
if dlead53(n) < 500
ch1 (n) = 0;
end
end
ch1(ch1==0) = NaN
plot (t, lead53, 'b')
hold on
plot (t, ch1, '-g') %pacing spikes in green
hold off
end

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回答（1 个）

José-Luis
José-Luis 2016-12-14
编辑：José-Luis 2016-12-14
data = rand(100,5);
%Loop through the columns
for ii = data
%do your thing: ii is a column vector containing the data of a column
end
Depending on what you actually want to do, it might be possible to vectorize.

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