re-arranging of columns

hi everyone..

i have a data file with 24 columns and 125 rows... I want to bring 23rd column after column 4... how will i do that... please help

Answer 1

[Viju]

Once you import this data into a MATLAB variable, there are multiple methods. One way is as follows, where x is the data and y is where I am storing the new data.

y = [x(:,1:4) x(:,23) x(:,5:22) x(:,24)]

[aditi]

ohh okay.... thanks viju..

so here 'x' is the variable in which i load the data file?? right???

Answer 2

[Jos (10584)]

No need for concatenation …

    A = load('mydatafile.txt')   % only numbers separated by spaces/tabs
    A(:,[4 23]) = A(:,[23 4])    % switch columns 4 and 23