how to extract data after squeeze the matrix?

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Muaaz Badrul
Muaaz Badrul 2019-10-14
评论： Adam 2019-10-14
i have 3D data that will be squeezed to 2D data matrix. the data is 116x150x45 where after the squeeze, i want to take out sample 1-25 only,
thus, Y should have 25 for Y(1) until Y(25), but i only got Y that will extract and replace after squeezing. anyone can help?
for a = 1:25
Y=squeeze(fmridata(:,:,a)); % for healthy patients from 1-25
end
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Muaaz Badrul
Muaaz Badrul 2019-10-14
but the data will still be in 3D right? or it will be converted into 2D matrix?
Adam
Adam 2019-10-14
It will still be stored in 3d yes. But how it is stored in a variable doesn't really matter. It's what you do with it from there that matters.

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Rik
Rik 2019-10-14
Something like this is probably what you're looking for, although it makes it more difficult to compare the same pixel over all patients.
Y=cell(1,25);
for a = 1:25
Y{a}=squeeze(fmridata(:,:,a)); % for healthy patients from 1-25
end
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Rik
Rik 2019-10-14
My code will result in a cell array with 25 elements, where each cell contains a matrix of 116x150. This avoids numbered variables, which are a bad idea in general.
As indicated by others: The squeeze is not needed, and a 3D array is probably a better idea, depending on what you want to do next with this array.

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