Okay, the first few points of the line graph (=series 1) are:
90.5, -47.19
92, -42.20
93.5, -34.74
95, -27.02
96.5, -27.59
98, -27.81
99.5, -23.84
101, -20.86
102.5, -21.18
104, -27.79
105.5, -31.61
107, -38.03
108.5, -44.62
110, -44.72
And the first few “points” (=series 2) have x values of:
91.87
105.39
125.76
95.14
90.68
108.97
In the silly picture i drew above, i’ve plotted the series 2 points with arbitrary y values. What i actually want is a y value that makes the point plot on top of the line (series 1 y = series 2 y). I can’t go through and calculate this manually for each point in series 2 as:
a) there are hundreds of them and
b) the x values of the two series don’t match up, so some of the points will be sitting on interpolated sections of the line.
Feel free to admit defeat! (and welcome to the forum by the way :D).