run through a cell content in single loop

Hello,

I try to get data from cell A by its index value(stored in B).

A = cell(1, 10);
B = [1 3 6 8];

How to get first 3rd, 6th, 8th cell content in a single loop?

I tried A{B}, it doesn't work.

If A is a large cell, A = cell(1, 50000); B = [many indice here], I got error:

AA = A(B);
??? Index exceeds matrix dimensions.

[Daniel Shub]

Are you sure you did not screw something up?

A = cell(1, 50000);

B = randi(50e3, [1, 500e3]);

AA = A(B);

works fine for me. What is the max of your B?

Answer 1

[Matt Tearle]

Do you want AA to be a cell array or whatever type the contents are (assuming they're all the same)? In the former case AA = A(B) (with parentheses). In the latter, AA = [A{B}] (with curly braces).

But it sounds like your error message is a simpler issue: the values of B aren't between 1 and numel(A).

Answer 2

[REN]

I guess my MATLAB has problem, it crashed several times last weekend.

Maybe some config files were changed?

Not sure how to restore the settings.

Thanks Matt and Daniel !