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how can one use mathematica get the approximate derivative of {x,y} data points? #2
The derivative curve you will get with Interpolation[]' can look very weird. I find I get better results using Interpolation[..., Method->"Spline"]'. The Spline function is continuous in first and second derivatives, so the resulting derivative is smoother.
Daniel
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 dmaxwarren (111)
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1/16/2012 12:03:52 PM |
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Setting InterpolationOrder->1 within your Interpolation function, and you can often fix the undesirable outcome you have identified.
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From: dr DanW [dmaxwarren@gmail.com]
Sent: Monday, January 16, 2012 17:12
Subject: how can one use mathematica get the approximate derivative of {x,y} data points?
The derivative curve you will get with Interpolation[]' can look very weird. I find I get better results using Interpolation[..., Method->"Spline"]'. The Spline function is continuous in first and second derivatives, so the resulting derivative is smoother.
Daniel
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 smartin4798 (93)
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1/17/2012 8:33:13 AM
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