Include output from %matplotlib notebook backend as SVG in ipynb

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鱼传尺愫
鱼传尺愫 2021-02-19 21:47

This answer from a few years ago shows how you can make jupyter notebook create graphs as svg. The solution is to tell the InlineBackend to use svg as output.

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  •  無奈伤痛
    2021-02-19 22:44

    From whatI understand from reading about matplotlib backends, nbagg, which is called using %matplotlib notebook uses the Agg (Anti-Grain Geometry) render which is not capable of rendering vector graphics. Unfortunately this is the only out of the box way of using an interactive inline backend for Jupyter.

    Docs Link https://matplotlib.org/faq/usage_faq.html#what-is-interactive-mode
    Similar Answer How to make matplotlibs nbagg backend generate SVGs?

    If you don't need the interactivity just keep use

    import pandas as pd
    from IPython.display import SVG, display
    from numpy import ndarray
    
    def svg_add(chart, size=(4,4), dpi=100):
        """Takes a chart, optional tuple of ints for size, int for dpi
        default is 4 by 4 inches with 100 dpi"""
    
        if type(chart) == ndarray:
            fig = chart[0].get_figure()
            fig.set_size_inches(size)
            fig.savefig("mybar.svg", dpi=dpi)
            display(SVG(filename='mybar.svg'))
        else:
            fig = chart.get_figure()
            fig.set_size_inches(size)
            fig.savefig("mybar.svg", dpi=dpi)
            display(SVG(filename='mybar.svg'))
    

    then

    df = pd.DataFrame([[2,5]],columns=['a','b'])
    bar_chart = df.plot(subplots=False, kind='bar')
    svg_add(chart=bar_chart,size=(3,3),dpi=100)
    #or
    #svg_add(bar_chart,(3,3),100)
    

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