Could anyone help me to solve with the following issue.

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Prabha Kumaresan 2018-1-19

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评论： Star Strider 2018-1-19

A=[20 40 60 80 100]
B= [ 120 140 160 180 200]
for t=1:length(A)
    for r=1:length(B)
        G=rand(A(t),B(r))
    end
end

If i run the code it executes and I can see only (100x200) matrix in the workspace. Could anyone tell me how to view all sizes (20x120),(20,140),(20,160)...... in the workspace.

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Torsten 2018-1-19

You permanently overwrite G in the above loop.

Only rand(A(5),B(5)) remains at last for G which is 100x200.

If you want to have matrices of sizes (20x120),(20x140) etc. in one structure, create G as cell(5).

Best wishes

Torsten.

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Answer 1

Star Strider 2018-1-19

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Probably the easiest way is to create ‘G’ as a cell array:

G{t,r} = rand(A(t),B(r));

Then you can address each element of the cell array to get the corresponding matrix to use later in your code.

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Prabha Kumaresan 2018-1-19

If I use the command it gives me the size of the cell array. But how to get the data of each matrix with respect to rand command.

Star Strider 2018-1-19

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Address the cell array with the appropriate subscripts to get the data in it:

UseMatrix = G{2,3};

will load the matrix in ‘G{2,3}’ into the ‘UseMatrix’ variable.

You can use the matrices in the cell array directly in your calculations. You do not have to load them to a separate variable first. (I am doing this here simply to demonstrate the idea.)

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