Synchronizing 2 blocksignals with a double block over 18 blocks

Hi matlabusers,

So I am figuring out a problem. I have 2 signals that i want to synchronize with Matlab.

my data has 3 colums, time1;time2;dataset1;dataset2

    for i=1:einde;

    if userdata (i,3)>2500;
        userdata(i,5)=5;
    elseif userdata (i,3)<=2500;
        userdata(i,5)=0;
    else userdata(i,5)=0;

    end

so now I have a clean signal :)

http://imageshack.us/photo/my-images/255/blocksignal.png

now I want to count the peaks so I know where my double peak is. So I thought, maby it is possible to make an extra column that searches in the column from the 0-5 column the first 5 value and makes it 1. then the second value back to 0 zo that u have a column that only haves a 1 when the peak starts. so from there i am able to find the double peak. or do you maby have an better idea?

thanks in advance,Martijn