# MATLAB: Extract data from large file

filelargemat

 I've got a  very large (50 mB) .mat file with results from a 15 year, 6h run of wave hindcast  in various geographical points.
The .mat file is organized in 3 colummns (in which the first two colummns are the geografical location x and y(eg: 37.1234N and 7.67363W), and the 3rd is the parameter I'm interested in) and I want to extract to a file only the data concerning 15 years for only two specific points.
   .        .   .        .37.4321 8.9823 537.4321 8.9850 7*37.1234 7.6763 8*   .        .   .        .37.4321 8.9823 837.4321 8.9850 3*37.1234 7.6763 5*   .        .   .        .That means I'll have a smaller file with the same data but only for two points
Any Idea?
Thank you
Paul

Data=[37.4321 8.9823 537.4321 8.9850 737.1234 7.6763 837.4321 8.9823 837.4321 8.9850 337.1234 7.6763 5];Index=and(Data(:,1)==37.1234,Data(:,2)==7.6763);MyData=Data(Index,3)