It is possible to projection points from plot to X axis? Probably this is
popular topic, but i do not found nothing in internet.
can you give an example of what output you would like? It looks in the plot like the data points are regularly spaced in X, so projection of those points on the X axis would just be a linear array of X values.
Do you mean that you want to output an interpolated value? Given a Y value, output a corresponding X value?