Could you help me on one question as below:
now I have a dataset like:
var1 var2 var3
cf555 0.45 1
cg564 0.565 2
vg344 0.23 3

I want to permutate var2 only, if I do the transformation, then i can get
var1 var2 var3
cf555 0.23 1
cg564 0.565 2
vg344 0.45 3

var2 values in line3 change to line1 but the other columns are not changed.

Thanks