Re: "Multilevel access cells data"

|In the link at the bottom there are several examples. Here are 2-examples:

C{1,1}(1,2)

Returns: ans = 2;

x{1,1}(1:2)

Returns (2-values): ans = 7, 8

My Qn: Can i retrieve values across sub-cells?

For example my Cell x is defined as:

Cell x =

[3x3 double], [4x4 double]

Can i retrieve x{1}(1,1) and x{2}(1,1) in a single statement?

Like:

x{1:2}(1,1); % Attempt to retrieve 2-values across 2 sub-cells

Statement above should return

[x{1,1}(1,1) x{1,2}(1,1)];

However i'm getting an error

Relevant link See:

http://www.mathworks.com/help/matlab/matlab_prog/multilevel-indexing-to-access-parts-of-cells.html

Answer 1

[Voss]

"my Cell x is defined as: Cell x = [3x3 double], [4x4 double]"

x = {magic(3),magic(4)} % create x

x = 1×2 cell array
    {3×3 double}    {4×4 double}

x{:}                    % show the contents of each cell of x

ans = 3×3

8 1 6 3 5 7 4 9 2

ans = 4×4

16 2 3 13 5 11 10 8 9 7 6 12 4 14 15 1

"Can i retrieve x{1}(1,1) and x{2}(1,1) in a single statement?"

result = cellfun(@(c)c(1,1),x) % store element (1,1) from each cell of x in result

result = 1×2

8 16

"should return [x{1,1}(1,1) x{1,2}(1,1)];"

isequal(result,[x{1,1}(1,1) x{1,2}(1,1)])

ans = logical
   1