MATLAB: Finding 4 connectivity for a matrix

matrix

I have a matrix
A =
     1     5     9
     8     2     3
     4     8     3
please tell how to find 4 connectivity for this matrix

Best Answer

L = bwlabeln(Matrix)
[L, NUM] = bwlabeln(Matrix)
[L, NUM] = bwlabeln(Matrix, conn)
L, containing labels for the connected components in Matix NUM the number of connected value found in Matrix.
Example:
[L, NUM] = bwlabeln(Matrix,4)
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