How to take elements row wise or column wise in a 2d array

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MSP 2016-12-31

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https://ww2.mathworks.cn/matlabcentral/answers/318697-how-to-take-elements-row-wise-or-column-wise-in-a-2d-array

评论： Walter Roberson 2017-1-1

A is a 5*5 array. Its needed to take 7 elements along the 1st column and 2 from the beginning of 2nd column.So the window size is 7.Now that makes it possible to take 3 windows.So 4 elements are left.this last window should be 4 leftover elements and rest zeroes.How to have a loop that gives me the 4 windows in a variable

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MSP 2017-1-1

编辑：per isakson 2017-1-1

But can u pls generalize it

per isakson 2017-1-1

In your question you say

"a 5*5 array" &nbsp
"take 7 elements [window] along" &nbsp
"that gives me the 4 windows in a variable" &nbsp
"matrix signalprocess" &nbsp

"generalize" &nbsp Yes, but in what way? Arbitrary size of the input matrix and/or the window? Along columns or rows? ...

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Walter Roberson 2016-12-31

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https://ww2.mathworks.cn/matlabcentral/answers/318697-how-to-take-elements-row-wise-or-column-wise-in-a-2d-array#answer_249062

在 MATLAB Online 中打开

https://www.mathworks.com/help/signal/ref/buffer.html

buffer(A(:), 7)

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Walter Roberson 2017-1-1

在 MATLAB Online 中打开

window = 7;
A = randi(5,5);
n = numel(A);
left_over = mod(n, window);
if left_over == 0
  stream = A(:);
else
  stream = [A(:); zeros(window - left_over, 1)];
end
output = reshape(stream, window, []);