MATLAB: How to index using cell arrays

cell arraysindexing

A = randi(100,1,8); % Some array that I want to index into.

B = {[1;2;3];[4;5];[6];[7;8]}; % Cell array with indices.

%I want to index B into A to get:

C = {[A(1);A(2);A(3)];…;[A(7);A(8)]}

Best Answer

cellfun(@(b) A(b), B, 'UniformOutput', false)

Related Solutions

MATLAB: How to create a 1×3 cell array to hold multiple individual arrays

my_cell_array = {a,b,c};

Or if you are simply asking how to pre-allocate the cell array in advance:

my_cell_array = cell(1,3);

MATLAB: How to access an cell array using an cell array of indices

Using cellfun (not faster, just more compact):

>> A = {[1,2,3],[4,5,6,7,8],[9,10,11,12]};
>> B = {1:2,2:4,1:3};
>> C = cellfun(@(a,b)a(b),A,B,'uni',0);
>> C{:}
ans =
     1     2
ans =
     5     6     7
ans =
     9    10    11

Best Answer

Related Solutions

MATLAB: How to create a 1×3 cell array to hold multiple individual arrays

MATLAB: How to access an cell array using an cell array of indices

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