How to take elements row wise or column wise in a 2d array
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MSP
am 31 Dez. 2016
Kommentiert: Walter Roberson
am 1 Jan. 2017
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
3 Kommentare
per isakson
am 1 Jan. 2017
In your question you say
- "a 5*5 array"  
- "take 7 elements [window] along"  
- "that gives me the 4 windows in a variable"  
- "matrix signalprocess"  
"generalize"   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
am 31 Dez. 2016
1 Kommentar
Walter Roberson
am 1 Jan. 2017
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, []);
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