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Keeping count of consecutive of two vectors

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Daniel
Daniel 2016-2-17
评论： Jos (10584) 2016-2-17
I have two vectors.
A = [9 9 8 12 12 12 7 6 15 15 15 15 21 21 10 5 15 9 9 9 9 7 20 20 1 5 6 7 7];
B = [212 100 212 200 180 200 134 150 200 200 200 200 150 120 120 120 120 120 120 212 212 212 150 150 150 120 133 132 123 150];
I need to count how many times A == 9 && B >= 212 consecutively. As well as count 10 =< A < 15 && B >= 200 consecutively, and count where A>=15 && B>= 150 consecutively.
I'd appreciate any help.
  2 个评论
Stephen23
Stephen23 2016-2-17
The vectors A and B have different number of elements, therefore it is not possible to merge their logical relations like this: A == 9 & B >= 212.
Can you please show us the exact output that you expect for these input vectors.

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回答（1 个）

Jos (10584)
Jos (10584) 2016-2-17
I am not really sure what you mean by consecutively. But this may help you further:
TF = A ==9 && B>= 212
will give you a sequence of true (1) and false (0). If you want to count how many times a true is followed by another true in TF.
MyCount = sum(TF(1:end-1) & TF(2:end))

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