How to summarise every column

nba=xlsread('nba.xls') 

attendance = nba(:,1); 
price = nba(:,2);

bar3 (attendance, price) 
bar3 (attendance,1.0) 
bar3 (attendance,'y') 

title('NBA Attendance vs. Ticket Price')
xlabel('Ticket Price $')
ylabel('Attendance')
grid on

Hi, im actually just started using Matlab. What im trying to do is i have two columns with digit andn im trying to make a calculation on every column how do I do that ? ( Example column 1 : 100 , column 2 : 50 ) How do I multiple it and get the answer on a new bar chart or somewhere? ( I have load of column )

[Walter Roberson]

What size of output are you expecting when you multiply 100 columns by 49 columns ?

Answer 1

[Chong How Hung]

Sorry thats a bit confused, what im doing is. I have got a data set with 2 columns

column 1 : 100 100 100 100 100 100 100 
column 2 : 200 200 200 200 200 200 200

i want column 1 total amount and column 2 total amount and multiple it in the end;

example : column 1 = 700 total, column 2 = 1400 total

and last step i wanted to do is multiple the total amount

700*1400= 980,000.

But how am I doing it on Matlab ?