如何修改matplotlib-venn中的字体大小

Question

我有以下Venn图：

from matplotlib import pyplot as plt
from matplotlib_venn import venn3, venn3_circles
set1 = set(['A', 'B', 'C', 'D'])
set2 = set(['B', 'C', 'D', 'E'])
set3 = set(['C', 'D',' E', 'F', 'G'])

venn3([set1, set2, set3], ('Set1', 'Set2', 'Set3'))

看起来是这样的：

​

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如何控制情节的字体大小？我想加一点。

Answer 1

如果out是venn3()返回的对象，则文本对象仅存储为out.set_labels和out.subset_labels，因此可以这样做：

from matplotlib import pyplot as plt
from matplotlib_venn import venn3, venn3_circles
set1 = set(['A', 'B', 'C', 'D'])
set2 = set(['B', 'C', 'D', 'E'])
set3 = set(['C', 'D',' E', 'F', 'G'])

out = venn3([set1, set2, set3], ('Set1', 'Set2', 'Set3'))
for text in out.set_labels:
    text.set_fontsize(14)
for text in out.subset_labels:
    text.set_fontsize(16)

Answer 2

在我的例子中，out.subset_labels的一些值是NoneType。为了省去这个问题，我做了：

from matplotlib import pyplot as plt
from matplotlib_venn import venn3, venn3_circles
set1 = set(['A', 'B', 'C', 'D'])
set2 = set(['B', 'C', 'D', 'E'])
set3 = set(['C', 'D',' E', 'F', 'G'])

out = venn3([set1, set2, set3], ('Set1', 'Set2', 'Set3'))
for text in out.set_labels:
    text.set_fontsize(15)
for x in range(len(out.subset_labels)):
    if out.subset_labels[x] is not None:
        out.subset_labels[x].set_fontsize(15)

Answer 3

我只是在Matplotlib中更改了字体大小(还可以使用rcParams更改文本颜色)。

from matplotlib_venn import venn3
from matplotlib import pyplot as plt
plt.figure(figsize = (6, 5))
font1 = {'family':'serif','color':'black','size':16} # use for title
font2 = {'family': 'Comic Sans MS', 'size': 8.5} # use for labels
plt.rc('font', **font2) # sets the default font 
plt.rcParams['text.color'] = 'darkred' # changes default text colour
venn3(subsets=({'A', 'B', 'C', 'D', 'X', 'Y', 'Z'}, 
               {'A', 'B', 'E', 'F', 'P'}, {'B', 'C', 'E', 'G'}), 
      set_labels=('Set1', 'Set2', 'Set3'),
      set_colors=("coral", "skyblue", "lightgreen"), alpha=0.9)

plt.title("Changing Font Size in Matplotlib_venn Diagrams", fontdict=font1)
plt.show()