For LOOP for splitting an ECG signal into different CHUNKS

I have an ECG signal `[xx]` with length is 2000, I am trying to create "for loop function" that can split the signal into 10 separate chunks but I am experiencing difficulty. That is, I want to achieve something like this:

yy1 = xx(1:200) -----chunk 1;

yy2 = xx(201:400) ----chunk 2 ;

.

.

.

.

yy10 = xx(1801:2000)-----chunk 10;

A "for loop" will make this faster for me especially with a signal of larger length.

Please, any suggestion on how to do this with a for "loop"?

[Geoff Hayes]

Ola - consider using reshape to split the signal into a 200x10 array (assuming exactly 2000 elements in ECG signal).

[Jon]

Sorry Geoff, I was busy writing my answer when you made the above suggestion. As you can see I also went for the reshape approach.

Answer 1

[Jon]

It's not really clear to me from your description what you are trying to do. From what I can infer from your description you have a 2000 by 1 or maybe 1 by 2000 vector of ECG data points and you want to break it up into 10 equal length portions for some type of analysis. I would suggest doing something like this where x is your original length 2000 vector of ECG points and y is the result of some calculation using some function that I will call for the example myFun. You can adapt accordingly to your specific needs

% define dimensions
numPoints = length(x); % 2000 in your case
numSegments = 10; % number of segments
segLength = numPoints/numSegments;

% make a data array that has a column of data for each non-overlapping segment
X = reshape(x,segLength,numSegments)

y = zeros(numSegments,1); % preallocate array to hold results

for k = 1:numSegments
   y(k) = myFun(X(:,k))
end

[Ola Ola]

Thank you for the answer.