I want to study antenna patterns of different arrangements. I am looking for a very cheap software ( free is even better) to plot graph if I provide the [itex]\;R,\theta,\phi[/itex].(adsbygoogle = window.adsbygoogle || []).push({});

Even if 2D plot would be helpful like keeping either [itex]\;\theta\;\hbox { or }\; \phi\;[/itex] constant and vary the other angle to plot the 2D graph of R vs the angle would be very helpful.

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# Any grapth utility program that can plot graph with spherical coordinates?

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