How can i determine the points of the intersection of the curve with an axis parallel to x axis ?

Hi

I have this curve and i want to determine the points of the intersection with the red curve h1.

Please help me.

[Torsten]

How are the curves given ? As tables of values ? Or explicit functions ?

Best wishes

Torsten.

Answer 1

[KSSV]

interp1 should work for you....the red curve is at 185 on y-axis. Let x,y be your curve data.

yi = 185 ;
xi = interp1(y,x,yi)