Binary matrix to array of poitns

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Crandel
Crandel 2016-5-4
编辑： Stephen23 2016-5-4
Hi, I have a binary image (only 0 and 1) and I want to convert it to x-y arrays.
For example:
Matrix
0 1 0 1
0 0 0 1
1 0 0 0
0 0 0 0
Obtain:
x = [1 1 2 3];
y = [2 4 4 1];
I can do it with two loops, but I'm finding something more fast. Thanks

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Stephen23
Stephen23 2016-5-4
编辑：Stephen23 2016-5-4
>> [y,x] = find(M.')
y =
2
4
4
1
x =
1
1
2
3

更多回答（1 个）

CS Researcher
CS Researcher 2016-5-4
Do the x and y arrays have to be in that order? If not, you can do this:
[x,y] = find(A>0);

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