I haven't done any of this since university but I remember that a spline can be used to calculate the points on a line given a number of existing ordinates. I forget how it works (I learned about it for an exam and then forgot it pronto) but a quick CPAN search yielded Math::Spline which appears to do the trick.

according to the POD, you can create a Math::Spline object with a number of points (as two array refs). You can then evaluate the result for a particular point.

The advantage of this method is that you can locate a point that is on a continuous line but which isn't a point in your data.

In reply to Re: Any idea for predicting the peak points in the graph by perl by inman
in thread Any idea for predicting the peak points in the graph by perl by Anonymous Monk

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