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vrf FAQ: interpolations -was:limit lines in Waveform (time) charts

Question asked by VRFuser on Mar 12, 2008
Hi all,

I am measuring a VGA by setting a DAC value, and measuring RF power.

I want to reduce the number of measurements I take by using curve smoothing (non-linear interpolation).  The important thing is that the curve MUST pass through the measurement points.  This means that regression is not the answer.  I have tried ‘cubic spline’ (Matlab ‘spline’), but it does odd things at the ends.  I wondered if Bezier curves would be appropriate, and if so, has anyone got a Bezier function I could make use of?

 

Best Regards

 

David Watling

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