Getting data from array socket

Hi, I have an array from data socket and I would like to find the value 53, then if its find, I need to find the next byte if its 0 or 1 or 2 or 3

header = fread(ropaRadarReceive,bytesToRead);

After finding the values 53, then either 0, 1, 2, 3, I need to section that array to hold the array data after 53, then 0 or 1 or 2 or 3

something like that

data = fread(header,53) if data is 0 get data after 0 till the next 53 if data is 1 get data after 1 till the next 53 ..etc

Answer 1

[Guillaume]

where = find(header == 53);
if ~isempty(where)   
     %at least one 53 found
     nextbytes = header(where + 1);  %note that if more than one 53 is found, nextbytes will be a vector
     %...
end

[Ahmed Tolba]

Thanks for your fast answer, would you please see the edited question, I have more requirments