MATLAB: Is there a function that calculates the no. of rows or cols

matlab function

a=[1 1 1;1 1 1;1 1 1;1 1 1]

no of rows=4

col=3

Dear mary, use

[row, col] = size(a)

[log1,idxb] = ismember(A,B,'rows');

If D contains an entry every second, you can use:

 D = randi(2000, 1, 20); % sample data
 di = diff([0 D > 25 0]);
 i1 = find(di == 1);
 i2 = find(di == -1);
 Nevents = nnz(i2 - i1 > 20);