MATLAB: Create a matrix with specif size

MATLABmatrix arraymatrix manipulation

Hi MATLAB community,

I have a array with the size (360×1), I would like to organize into a matrix with sizes (30 rows and 12 columns) using the data available on the array, organize sequencially. Which the function I can use for made this?

Thank you very much

Guilherme

Best Answer

See reshape()

B = reshape(A, 30, 12); % A is 360x1 and B is 30x12

It will organize the data column-wise, i.e., fill the first column, then second, and so on.

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MATLAB: Problems converting a row(1, length) to a column matrix (3×3)

I am not certain what you want to do.

Try this:

a = 1:8;                                    % Original Vector
N = 8;                                      % Rows In Matrix
a = [a zeros(1, N*3-numel(a))];             % Extend Vector To Be Compatible With ‘reshape’
b = reshape(a, 3, [])'                      % Reshape & Transpose
b =
     1     2     3
     4     5     6
     7     8     0
     0     0     0
     0     0     0
     0     0     0
     0     0     0
     0     0     0

MATLAB: Q90 percentile for monthly time series

s = size(a);
a1 = reshape(a, s(1), s(2), 12 , s(3) / 12);
a2 = prctile(a1,90,4);
b1 = reshape(b, s(1), s(2), 12 , s(3) / 12);
out = sum(bsxfun(@lt,b1,a2),4)*12/s(3)*100;

Best Answer

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MATLAB: Problems converting a row(1, length) to a column matrix (3×3)

MATLAB: Q90 percentile for monthly time series

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