10 examples of 'save matplotlib figure as png' in Python

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def save_figure(filename, extra_artists=None, tight=True):
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    filename = filename.replace('.', '-')
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    filename += '.pdf'
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    if extra_artists:
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        plt.savefig(
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            FIGURES_DIR + filename,
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            bbox_extra_artists=extra_artists,
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            bbox_inches='tight')
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    else:
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        if tight:
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            plt.tight_layout()
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        plt.savefig(FIGURES_DIR + filename)

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def save_figure(filename, fig=None):
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    """Apply the figure options for saving and then save the supplied
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    figure to ``filename``.
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    The format of the output figure is set by ``options.plotting_outtype``.
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    **Parameters:**
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    filename : string
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        The output filename.
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    fig : figure object, optional
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        The figure to be saved.
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    **Returns:**
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    ``None``.
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    """
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    if fig is None:
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        fig = pylab.gcf()
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    fig.set_size_inches(*options.plotting_save_figsize)
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    pylab.savefig(filename, dpi=100, bbox_inches='tight',
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                  format=options.plotting_outtype, pad=0.1)
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    fig.set_size_inches(*options.plotting_display_figsize)

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def ggsave(plot, filename, width=None, height=None):
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    plot.make()
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    w, h = plot.fig.get_size_inches()
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    if width:
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        w = width
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    if height:
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        h = height
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    plot.fig.set_size_inches(w, h)
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    plot.fig.savefig(filename)

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def save_figure(
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    figure, save_at="", name="fig", save_fmts=["png"], output=False, **kwargs
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):
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    """
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    Save a figure at a specified location in a number of formats.
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    """
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    default_config = dict(dpi=600, bbox_inches="tight", transparent=True)
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    config = default_config.copy()
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    config.update(kwargs)
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    for fmt in save_fmts:
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        out_filename = os.path.join(str(save_at), name + "." + fmt)
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        if output:
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            logger.info("Saving " + out_filename)
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        figure.savefig(out_filename, format=fmt, **config)

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def render_mpl(self, fig, path, **kwargs):
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    return fig.savefig(path, format=self.name, **kwargs)

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def savefig(save_as):
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    """Save the figure."""
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    plt.savefig(f"../figures/Fig1_{save_as}.pdf", dpi=600, bbox_inches='tight')

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def save(self, name):
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    self.fig.savefig(''.join((name, '.png')), dpi=300)

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def save_on_disk(plot):
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    plot.savefig("image.png")

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def export_figure(img, cmap='gray', output='tmp.png',  vmin=0, vmax=1):
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    height, width = img.shape[:2]
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    fig = plt.figure()
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    fig.set_size_inches(width / height, 1, forward=False)
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    ax = plt.Axes(fig, [0., 0., 1., 1.])
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    ax.set_axis_off()
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    fig.add_axes(ax)
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    ax.imshow(img, cmap=cmap, vmin=vmin, vmax=vmax)
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    plt.savefig(output, dpi=height)
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    plt.close()

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def save_image(ax=None):
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    image_data = StringIO()
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    save_html(plt.gcf(), image_data)
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    image_data.seek(0)
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    return image_data