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Asked: 2026-05-26T08:48:36+00:00

I have a little C program that’s continuously acquiring a stream of data and

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I have a little C program that’s continuously acquiring a stream of data and sending it via UDP, and in real time, to a different computer. The basic framework for what I originally set out to do has been laid. In addition, however, I’d like to visualize in real time the data that’s being acquired. To that end, I was thinking of using Python and its various plotting libraries. My question is how difficult it would be to let Python have access to what is essentially a first in, first out circular buffer of my C program. For concreteness, let’s assume there are 1024 samples in this buffer. Does the idea of “letting Python have a continuous peek at dynamic C array” even sound reasonable/possible? If not, what sort of plotting options are best suited to this problem?

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1 Answer

  1. Editorial Team

    It is possible, but not too simple.

    You should inform yourself about the API and maybe have a look at some implementations.

    If you have done so, you can maybe provide a function which not only gives you a peek at the raw array, but maybe even reassembles it into the right order and length (if it is a circular buffer). This might be very convenient as you nevertheless have to copy the data.

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