settings.py 文件源码

def set_figure_params(dpi=None, figure_formats=['png2x']):
    """Set resolution and format of figures.

    Parameters
    ----------
    dpi : int, optional
        Resolution of png output in dots per inch.
    figure_formats : list of strings
        Only concerns the IPython environment; see
        `IPython.core.display.set_matplotlib_formats` for more details. For
        setting the default format for saving figures, directly set
        `file_format_figs`.
    """
    try:
        import IPython
        IPython.core.display.set_matplotlib_formats(*figure_formats)
    except:
        pass
    from matplotlib import rcParams
    global _dpi
    if dpi is not None: _dpi = dpi
    # need to set the following two lines as older Jupyter notebooks seem to use
    # 'savefig.dpi' and more rescent ones 'figure.dpi'
    rcParams['savefig.dpi'] = _dpi
    rcParams['figure.dpi'] = _dpi