not take into account zeros in a graph
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Hi,
I have to make a graph of a few points. In these points there are zeros, like [3 0 2 0 0 0 5 0 2 0 0 0 4 0 1 0 0 8]. I want to connect the positive integers, but without the line going trough the zeros. How can I manage this?
Kind Regards, Bart
回答（2 个）
Andrei Bobrov
2012-3-12
z = [3 0 2 0 0 0 5 0 2 0 0 0 4 0 1 0 0 8]
[i1,i1] = find(z)
plot(i1,z(i1));grid on
3 个评论
Bart
2012-3-12
Andrei Bobrov
2012-3-12
index of 'z'
Jan
2012-3-12
index=find(z) is sufficient, because the 2nd index is not needed.
carmen
2012-3-12
another way is to use
z=[3 0 2 0 0 0 5 0 2 0 0 0 4 0 1 0 0 8];
z(z=0)=[] % now z == [3 2 5 2 4 1 8]
plot(z)
this codes removes the zero-valued indices, that means that the size z will decrease by the amount of zero values that were there before. however, not always this makes sense to a problem, particularly if the x-axis-spacing needs to stay unchanged.
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