How can I count patterns in matrices
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I would like to kow whether there is a way of counting the number of continous patterns in a binary matrix.
0 1 0 0 1 0 0
0 1 0 0 1 0 1
1 1 0 1 1 0 1
0 1 0 1 0 0 1
0 1 0 1 1 0 0
0 0 0 0 1 1 1
0 0 0 0 0 0 0
From the above matrix there are three sets of 1's that join up. How can I caount these rather than just the total number of 1's?
1 个评论
Thomas
2012-9-17
Could you please define "sets of 1's". If you mean more than 1, then there are 4 sets
1 1 0 1 1 0 1 - 2 sets
0 1 0 1 1 0 0 - 1 set
0 0 0 0 1 1 1 - 1 set
回答（1 个）
There is a built in function for that, that allows you to specify a connectivity pattern:
doc bwconncomp
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