How do I interpolate 3 variables to create a scatter plot?

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Hello everyone! I have 3 variables: frequency, amplitude and reflection coefficient in form of 41x10 arrays.
Now I would need to interpolate those reflection coefficients in smaller gaps of frequencies and amplitudes (i.e. 10 Hz instead of 20 Hz) in order to increase the resolution of my scatter plot.
Can someone help me?
Many thanks. Carlo

Risposta accettata

Adam
Adam il 12 Dic 2016
doc interp2
  1 Commento
Carlo Di Giovine
Carlo Di Giovine il 13 Dic 2016
Modificato: Carlo Di Giovine il 13 Dic 2016
it seems not so easy using that. I do not have monotonically increasing variables.

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Walter Roberson
Walter Roberson il 13 Dic 2016
griddata and then sample at the appropriate grid locations

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