Saving a variable with an index in a for loop

Question

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Hello. I am running into an issue of saving a created matrix with an index added to it for example

for i=1:10
x=1:10
y=1:10
z=1:10
A=[x y z]
end

What im tryng to do is then save the resulting matrix as A1, A2, A3 ect. any pointers for this?

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Answer 1

Steven Lord 2021-10-4

0 个投票

Can you do this? Yes.

Should you do this? The general consensus is no. See that Answers post for an explanation and alternatives.

Walter Roberson 2021-10-4

If you do not have consistency of sizes, then use a cell array

A{i} = [x y z]

Stephen23 2021-10-5

编辑：Stephen23 2021-10-5

The solutions given above concatenate your data, which apparently your data is not suitable for.

You can trivially resolve this by using a cell array, for example:

c = cell(10,3);
for ii = 1:10
    c{ii,1} = 1:10;
    c{ii,2} = 1:10;
    c{ii,3} = 1:10;
end

Your approach of putting pseudo-indices into the variable names should definitely be avoided.