Create empty dataset array

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Hello everyone,

How Can I Pre allocate memory for a DATASET ARRAY which should have 274 Columns. There is another dataset array with the same columns in my workspace .The rows of the new dataset array differs every time the code run based on date. Can you help me with that?

Thanks, Vanessa

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KSSV 2017-4-26

The rows of the new dataset array differs every time the code run based on date whats the criteria here?

Vanessa 2017-4-26

every hour new data are fetched from a database the number of them is not known so when the code run i cannot preallocate the size of array.

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KSSV 2017-4-26

在 MATLAB Online 中打开

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You can follow something like this:

n = 10 ;   % number of columns 
A = zeros([],n);   % rows not known 
for ii = 1:100
   A(ii,1:n) = rand(1,n);
end

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Vanessa 2017-4-26

Thank u for your help!

KSSV 2017-4-26

thanking is accepting the answer.

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Create empty dataset array

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