polynomial plot fitting in matlab

Hi There my code produce several polynomials and their plots .. and also i have a main polynomial and its plot .. i want to find the closest produced polynomial to the main polynomial plot?

the red one is the main plot .. other is produced

Answer 1

[KSSV]

Find the standard deviation of each blue curve from red curve. Whose ever curve's standard deviation is least, that curve is close to the red curve.

[Alireza Lashgary]

do you have any matlab code for this?

[KSSV]

simple...doc standard deviation in matlab...there is a direct command to get it.