Vector x1 = new Vector(0); Vector x2 = new Vector(0); Vector x3 = new Vector(0); x1.LoadFromFile("x1_data.vec"); x2.LoadFromFile("x2_data.vec"); x3.LoadFromFile("x3_data.vec"); MtxVecTee.DrawIt(new TVec[] {x1,x2,x3},new string[] {"1st","2nd","3rd"}, "Multiple values",false);