how to create multiple matrix from a single matrix

If i have a matrix A=[ 1 2 3, 4 5 6, 7 8 9, 0 0 0, 0 0 0, 10 11 12, 13 14 15, 0 0 0, 0 0 0, 16 17 18 upto 10000 points]

here 1 2 3 are coordinates x y z .

so I want to store data in such a way that when we find two rows of all zeros there should be a new matrix created.

we need output like:

B1=[1 2 3, 4 5 6, 7 8 9]

B2=[10 11 12, 13 14 15]

B3=[16 17 18, .....]

B4= so on... upto last point of A.

Answer 1

[Akira Agata]

If you have Image Processing Toolbox, how about the following?

% Sample data
A = [...
  1 2 3;...
  4 5 6;...
  7 8 9;...
  0 0 0;...
  0 0 0;...
  10 11 12;...
  13 14 15;...
  0 0 0;...
  0 0 0;...
  16 17 18];

% Create label array
idx = ~all(A==0,2);
label = bwlabel(idx);

% Split the matrix A based on the label
c = splitapply(@(x){x}, A(idx,:), label(idx));

In this case, c{1}, c{2},....,c{N} corresponds to your desired mabrix B1, B2,...,BN.

[Akshay Sahu]

Thank you Sir Akira Agata.