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pythonmatplotlibheadless

Using PyLab's Specgram In A Headless Environment

Anyone know how to get it working? Unfortunately it seems by default specgram's code wants to generate an image, which I have no use for, only the data behind the image. The error I get is:

_tkinter.TclError: no display name and no $DISPLAY environment variable
Solution

  • You may set a matplotlib backend, which doesn't need a display attached:

    import matplotlib
matplotlib.use('pdf')

    These lines should go before importing pylab.