"uriel78" ha scritto nel messaggio
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I've read a lot of posts on this topic, but I can't find a function that
allows me to do what I've to do with my data...can sone help me?
TIA

I've also seen John Peltier's example, but it only gives a qualitative
explanation of the problem...Ok, he says, yes, excel's smoothing curve is
a belzier spline, but I still can't understand ho to interpolate my data
qirh a belzier's curve in such a way... :-(