All index values expect certain indices

Question

Niels de Vries 2018-11-27

回答： Bruno Luong 2018-11-27

Hey all,

My question is as follows: how can i select all the index values except for certain indices. Let's consider the following example:

A = [5 6 7 8]
x{1} = [1];
x{2} = [1 2];
x{3} = [2 3 4];

Now i want to select the values of A except for the indices in x, so the output should be:

[6 7 8]
[7 8]
[5]

I tried the following code (which does not work), does someone knows how to do this ?

for i = 1:3
    A(1:end ~= x{i})
end

Thanks in advance

Answer 1

Bruno Luong 2018-11-27

A = [5 6 7 8];
x{1} = [1];
x{2} = [1 2];
x{3} = [2 3 4];
c = cellfun(@(i) A(setdiff(1:end,i)), x, 'unif', 0)
c{:}

That gives:

ans =
     6     7     8
ans =
     7     8
ans =
     5