how many changes are there?

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Gisella Decarli
Gisella Decarli 2016-7-22
编辑： Stephen23 2016-8-1
I have this kind of data (column 1-2-3, respectively):
Right= [1 1 1 0 0 0 0 0 1 0 1 1 1]
Center=[0 0 0 1 1 1 0 0 0 1 0 0 0]
Left= [0 0 0 0 0 0 1 1 0 0 0 0 0]
I want to count how many changes there are between right and left, not considering the center. In my example there are 2 changes in total from right to left and from left to right. Thank you in advance.
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Thorsten
Thorsten 2016-7-22
What exactly are the "2 changes in total from right to left and from left to right"? Please expand.
Gisella Decarli
Gisella Decarli 2016-8-1
Here attached you can find an exemple of data. 1 means that subject is looking at the screen (left, right or center) and 0 that is not looking. So, I want to know how many times a subject switches the eyes from right to left and from left to right, not considering the center column. E.g. in the file (Trial5), here attached, the first switch is from right to left at 3.2,the second at 19.5 from right to left, the third at 20.4 from left to right and the fourth at 22.2 from right to left), so, in total there are 4 switches. Hope you will understand now. Thank you!

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