Summation of table imported from excel

So I have a table which was imported to matlab from an excel document. The table has 3 columns: Crankshaft angle, Volume, Pressure. I need to do a summation following this formula

The table has 720 rows of data.

Answer 1

[Mrutyunjaya Hiremath]

Hello Luis Eloy García-Mauriño Rey,

% Assuming xls data strored in variabl 'data' 
% colum 1 is Angle, colum 2 is Volume, colum 3 is Pressure 
Win = 0;
for i = 2:720
    Win0 = ((data(i,3) + data(i-1,3)) * (data(i,2) - data(i-1,2)))/2;
    Win = Win + Win0;
end
disp(Win)

[Luis Eloy García-Mauriño Rey]

thanks!