thanks Suyash!
i had managed to traverse but unfortunately row wise
am looking into what you suggested,
the file has more than one columns like i mentioned
Neg 0.75 Pos 0.65 Neg 0.75
Pos 0.63 Pos 0.74 Pos 0.74
Pos 0.84 Pos 0.88 Pos 0.88
Neg 0.54 Neg 0.57 Neg 0.57
Pos 0.67 Pos 0.67 Pos 0.67
Pos 0.83 Pos 0.89 Pos 0.83
Neg 0.56 Neg 0.55 Neg 0.56
Pos 0.68 Pos 0.60 Pos 0.68
Neg 0.58 Neg 0.58 Neg 0.58
Neg 0.74 Neg 0.64 Neg 0.74
but my code http://jsfiddle.net/a9ks2w43/16/ goes line by line and not column wise!!
so its basically three graphs in one display
with their corresponding neg and pos
thanks for your suggestion am looking into it again