MATLAB: Delete/Extract values from nested cell arrays

Question

I have cell array X (see attachment) which is a {1×3}->{1×2}->{2×2}->{1×10}-> (sizes ranging from 5 to 27)

From the inner array, I need to extract/keep the first, middle and last value.

For example, for the attached X:

CPClear_angle{1, 1}{1, 1}{1, 1}{1, 1}

-10.4805997230720 -8.45914496472814 -6.90173932281437 -6.67445150097098 -5.60467260957554 -1.40582560357418

Keep the values: -10.4805997230720 -6.90173932281437 -1.40582560357418 and transpose them so it results in a inner array of 3×10 for all.

I do want to keep the {1×3}->{1×2}->{2×2} arragement because each cell is a different group type.

For a single array, the code below extracts the values I need

x=x(:,[1,ceil(end/2),end])

but I dont know how to apply it to the nested cells.

Thanks.

Answer 1

Using ncellfun from File Exchange

CPClear=ncellfun(@transpose,CPClear_angle);
CPClear=ncellfun(@cell2mat, CPClear,3);
CPClear=ncellfun(@keepCP, CPClear,3);

and function

function [ m ] = keepCP( x )
    m=x([1,ceil(end/2),end],:);
end