Considering a 3D matrix. How to delete the first column of the first matrix, the second column of the second matrix, the third column of the third matrix and so on.

% Considering 3D matrix of dimension n

n=3;

for a=1:n

for b=1:n

for c=1:n

A(b,c,a)=c;

end

end

end

Answer 1

[Image Analyst]

For example, try this:

% Create sample data: cube of size n.
n=3;
m = randi(9, n, n, n)
% Create output array.
output = zeros(n, n-1, n);
for z = 1 : size(m, 3)
  thisPlane = m(:,:,z);
  columnToRemove = z;
  % Remove column by setting all elements of the column to null.
  thisPlane(:, columnToRemove) = [];
  % Assign narrower matrix to the zth plane of the output.
  output(:,:,z) = thisPlane;
end
% Print to command window.
output