# Beamforming Interpolation

**URL:** <https://discourse.obspy.org/t/beamforming-interpolation/306>\
**Category:** Users Mailing List Archive\
**Tags:** archive\
**Created:** [April 23, 2014, 8:28pm UTC](https://discourse.obspy.org/t/beamforming-interpolation/306 "2014-04-23T20:28:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Esteban\_Chaves](https://discourse.obspy.org/letter_avatar_proxy/v4/letter/e/ea5d25/32.png) [@Esteban\_Chaves](https://discourse.obspy.org/u/Esteban_Chaves)\
**Post date:** [April 23, 2014, 8:28pm UTC](https://discourse.obspy.org/t/beamforming-interpolation/306/1 "2014-04-23T20:28:23Z")

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Dear all;

I’m working on F-k analysis (with seismic noise) using the polar plot representation  
and I’d like to know if is it possible to apply interpolation between the gridded bins;  
if so, may I have an example how to do it?

Thanks in advance,

Esteban

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**Author:** ![Martin\_Gal](https://discourse.obspy.org/letter_avatar_proxy/v4/letter/m/a698b9/32.png) [@Martin\_Gal](https://discourse.obspy.org/u/Martin_Gal)\
**Post date:** [April 23, 2014, 11:41pm UTC](https://discourse.obspy.org/t/beamforming-interpolation/306/2 "2014-04-23T23:41:40Z")

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Hi Esteban,

what function are you using to plot your data (I am assuming matplotlib here)? If it is pcolor() or pcolormesh(), here is a small guide on how to accomplish what you are looking for, [http://stackoverflow.com/questions/12081932/interpolation-with-matplotlib-pcolor](http://stackoverflow.com/questions/12081932/interpolation-with-matplotlib-pcolor) . imshow() interpolates between gridpoints automatically, but I am not sure of its support with polar plots.

You also could increase the bin number in your calculations to achieve a better resolution? To my experience, the fk algorithm is quite fast and results can be obtained within seconds for a reasonable resolution.

Cheers,  
Martin