VENN DIAGRAM(维恩图)

代码下载地址
维恩图用于显示所有不同组的有限集合之间的可能的逻辑关系。每一组用一个圆圈表示，圆圈大小代表该组的重要性。组通常是重叠的：重叠的大小表示两个组之间的交集。建议不要使Venn图超过3分组，因为它将变得难以阅读。在python中，根据您拥有的组数，使用matplotlib库的venn2和venn3函数来实现Venn图。该章节主要内容有：

具有2个分组的基本的维恩图 Venn diagram with 2 groups
具有3个组的基本维恩图 Venn diagram with 3 groups
自定义维恩图 Custom Venn diagram
精致的维恩图 Elaborated Venn diagram
维恩图背景色自定义 change background colour of Venn diagram

需要安装matplotlib_venn模块：

pip install matplotlib_venn

官方文档：

https://pypi.org/project/matplotlib-venn/

from IPython.core.interactiveshell import InteractiveShell

InteractiveShell.ast_node_interactivity = "all"

1. 具有2个分组的基本的维恩图 Venn diagram with 2 groups

使用matplotlib库制作维恩图的主要方法有2种，但结果相同。第一个步骤是直接给出组及其交叉点的大小。第二个是给定两组值，python将自己计算每组的长度和公共值的数量（它们的交集）。通过venn2计算两个分组。

# library

import matplotlib.pyplot as plt

from matplotlib_venn import venn2

# 第一种方法，10，5为两组的大小，2为两组交叉大小;

# set_labels为组名

venn2(subsets = (10, 5, 2), set_labels = ('Group A', 'Group B'));

# 设置两组ABCD和DEF

venn2([set(['A', 'B', 'C', 'D']), set(['D', 'E', 'F'])]);

2. 具有3个组的基本维恩图 Venn diagram with 3 groups

通过venn3计算3个分组

# Import the library

import matplotlib.pyplot as plt

from matplotlib_venn import venn3

# Make the diagram

venn3(subsets = (10, 8, 22, 6,9,4,2));

# 设置三组ABCD、DEF、ADG

venn3([set(['A', 'B', 'C', 'D']), set(['D', 'E', 'F']), set(['A', 'D', 'G','F'])]);

3. 自定义维恩图 Custom Venn diagram

Venn上的自定义标签 Custom label on Venn
自定义维恩图上圆的线条 Custom Circles lines on Venn
自定义维恩图上的圆 Custom a circle on Venn

## Venn上的自定义标签 Custom label on Venn

# Import the library

import matplotlib.pyplot as plt

from matplotlib_venn import venn3

from matplotlib_venn import venn3_circles

# Custom text labels: change the label of group A

v=venn3(subsets = (10, 8, 22, 6,9,4,2), set_labels = ('Group A', 'Group B', 'Group C'))

# 单独改变A的标签

v.get_label_by_id('A').set_text('My Favourite group!')

## 自定义维恩图上圆的线条 Custom Circles lines on Venn

# Line style: can be 'dashed' or 'dotted' for example

# 设置维恩图

v = venn3(subsets = (10, 8, 22, 6,9,4,2), set_labels = ('Group A', 'Group B', 'Group C'))

# 画圆，linestyle线条类型，linewith线宽，color线条颜色

c = venn3_circles(subsets = (10, 8, 22, 6,9,4,2), linestyle='dashed', linewidth=1, color="grey")

## 自定义维恩图上的圆 Custom a circle on Venn

# Change one group only

v=venn3(subsets = (10, 8, 22, 6,9,4,2), set_labels = ('Group A', 'Group B', 'Group C'))

c=venn3_circles(subsets = (10, 8, 22, 6,9,4,2), linestyle='dashed', linewidth=1, color="grey")

# 设置第一个圆的线宽

c[0].set_lw(8.0)

# 设置第一个圆的线形

c[0].set_ls('dotted')

# 设置第一个圆的填充颜色

c[0].set_color('skyblue')

# Color

# id号

# 如ABC三个簇，010代表非A和B和非C,100代表A和非B和非C

# 设置透明度

v.get_patch_by_id('011').set_alpha(1.0)

# 设置颜色

v.get_patch_by_id('011').set_color('red')

# 打印id号

#v.id2idx

4. 精致的维恩图 Elaborated Venn diagram

# libraries

from matplotlib import pyplot as plt

import numpy as np

from matplotlib_venn import venn3, venn3_circles

# Make a Basic Venn

# 画最基础维恩图

v = venn3(subsets=(1, 1, 1, 1, 1, 1, 1), set_labels = ('A', 'B', 'C'))

# Custom it

# 设置A和非B和非C颜色为白色,标签为透明

v.get_patch_by_id('100').set_alpha(1.0)

v.get_patch_by_id('100').set_color('white')

v.get_label_by_id('100').set_text('Unknown')

# 设置A的标签为'Set "A"

v.get_label_by_id('A').set_text('Set "A"')

# 设置圆的线形

c = venn3_circles(subsets=(1, 1, 1, 1, 1, 1, 1), linestyle='dashed')

# 设置A的线宽和线形

c[0].set_lw(1.0)

c[0].set_ls('dotted')

# Add title and annotation

# 添加标签

plt.title("Sample Venn diagram")

plt.annotate('Unknown set', xy=v.get_label_by_id('100').get_position() - np.array([0, 0.05]), xytext=(-70,-70),

ha='center', textcoords='offset points', bbox=dict(boxstyle='round,pad=0.5', fc='gray', alpha=0.1),

arrowprops=dict(arrowstyle='->', connectionstyle='arc3,rad=0.5',color='gray'));

5. 维恩图背景色自定义 change background colour of Venn diagram

# Library

from matplotlib import pyplot as plt

from matplotlib_venn import venn2

# Basic Venn

v = venn2( (10, 20, 10), alpha = 1 )

# Change Backgroud

plt.gca().set_facecolor('skyblue')

# 显示边框

plt.gca().set_axis_on()

巴特西

[python] 基于matplotlib_venn实现维恩图的绘制

文章目录