Extrapolate/Scale with new plot

Hey dear Matlab users. I have following graphics and I would like to predict the shape of the lines for the other end values. In this case my only basis ist this graphics. I wanted to connect it somehow wit x_end Values and to the maxima respectively but I am stucked right now.

It means that depending on the previous lines I would like to create somehow the bold green one that You can see in the picture :)

Would You have any suggestions for me?

Answer 1

[madhan ravi]

see interp1() to extrapolate.

[Maciej Piotr]

I edited my question so that is easier to know what I exaclty mean :)