在Jupyter笔记本中缩放Matplotlib Plots的绘图大小

Question

Is there a possibility to scale the plot size of matplotlib plots in jupyter notebooks? You could increase the plot size by changing the default values of figure.figsize , but this does not affect parameters like fontsize, linewidth, markersize etc. What I need is a plot where all the parameters are scaled accordingly.

PS: To display plots in jupyter notebooks I use %matplotlib inline , see screenshot below.

Edit

For completeness, here is a code snippet doing exactly what I needed:

def scale_plot_size(factor=1.5):
    import matplotlib as mpl
    default_dpi = mpl.rcParamsDefault['figure.dpi']
    mpl.rcParams['figure.dpi'] = default_dpi*factor

Answer 1

You don't want to change the figure size. You want to change the dpi (dots per inch).
Also see Relationship between dpi and figure size .

import matplotlib.pyplot as plt
%matplotlib inline

def plot(dpi):
    fig, ax=plt.subplots(dpi=dpi)
    ax.plot([2,4,1,5], label="Label")
    ax.legend()

for i in range(1,4):
    plot(i*72)