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Old Mar 30, 2008, 12:29 PM   #1
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Which is the best interpolation to use and what is the difference?
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Old Apr 1, 2008, 9:38 AM   #2
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You can find the short descriptions in the help file here:


Personally, I just stick with Hybrid. It is the best all-around and one of the faster methods too.

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Old May 2, 2008, 12:33 AM   #3
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This is all considering you have a set of scientific trials in an experiment (like, you take the values for at 0, 1, 2, 3, 4 5, 6, 7, 8, 9, 10 minutes after an event).

Interpolation is when you evaluate, based on your result, the value of, let's say, 5.5 - a point between the endpoints of the range, but not with a definite value.

Extrapolation is when you evaluate, based on your result, a value that is outside the range of tested value, let's say, in this case, 12 minutes after the event.

If you have enough entries, and can see a clear trend, both interpolation and extrapolation can be OK. If the trend is not very visible, though, or you have too few values, either or both evaluations can be very far off the actual values.

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