how to disply all the columns from dataset

I have a total 25 columns in tha dataset and 2000 rows. When I am applying crossvalidation on it it display the only one column. I am running this code it display single column data

data= load('WUILWindows.txt');
CVO = cvpartition(2616,'k',5);
for i = 1:CVO.NumTestSets
    trIdx  = CVO.training(i);
    teIdx  = CVO.test(i);
end
traindata = data( trIdx);
testdata = data ( teIdx);