MATLAB: How to find the number of occurrences of data points between specified values in a matrix

Question

I am trying to find the interval of data point occurrences in a 1×40 matrix.

given:

x=[1 2 2 2 2 2 2 2 2 2 1 2 2 2 2 3 3 4 5 6 1 2 2 2 2 2 2 2 2 2 2 2 3 4 1 2 2 2 2 2];

I want to find the number of values between the 1's found in this data set. The output should say how many occurrences of "1" exist (4) and the number of data points that occur before the next "1" in sequence. For example, between the first and second "1" =9, between the second and third "1=9", between the third and fourth "1"=13.

Any help would be appreciated!

Answer 1

t = x == 1;
out = diff(find(t))-1;