Iterating through columns of data

Hi ,

I have two columns of data, voltage and current with 44058 rows.

I need a way of iterating through both and finding the resistance for every value?

Any ideas?

Thank you

Answer 1

[Stephan]

% Example data
U_I_data = [10 0.5; 20 2; 25 4; 12 3; 18.5 2]

% R = U/I as an elementwise matlab operation
R = U_I_data(:,1) ./ U_I_data(:,2)

results in:

U_I_data =

   10.0000    0.5000
   20.0000    2.0000
   25.0000    4.0000
   12.0000    3.0000
   18.5000    2.0000


R =

   20.0000
   10.0000
    6.2500
    4.0000
    9.2500