How to interpolate impedance measurements in a polar plot

[MichaGue_01]

Hello,

I do impedance measurements and plot them afterwards in a polar plot (see attached VI). Because of a sharp resonance it is hard to get a high resolution there.

- Is it possible to do an interpolation between the the measured points?

Thanks a lot.

Best regards,

Michael

[muks]

See whether this will help

[ST5]

Do you want to interpolate, to have more values on the right side of the graph?

I see you have the most data located on the left.

You could have a look in the examples:

*B spline Fitting Demo.vi uses splines to interpolate

*Fit ellipse.vi gives a function, based on points. From there on you can generate as many datapoints as you want.

There are many other examples.

Message Edited by ST5 on 03-22-2010 07:16 AM

[rpursley8 · Accepted solution]

Take a look at the attached.  I created an array to resample the data based on the data itself and then used the Resample (constant to variable) to generate interpolated data.  This  way the resonance is interpolated with more resolution than other locations.  Does this do what you want?

 There is a constant on the block diagram that controls how much more the resonance will be interpolated.

Message Edited by rpursley8 on 03-22-2010 12:02 PM

[MichaGue_01]

Hello rpursley8,

thank you for your solution.

Best regads,

Michael