# !usr/bin/env python
# -*- coding:utf-8 _*-
"""
@FileName: 散点图3
@Time: 2021/12/31,13:23
@Motto: 每天都要奥力给
"""
import numpy as np
import matplotlib.pyplot as plt
# 随机数生成器的种子
np.random.seed(19680801)
N = 50
x = np.random.rand(N)
y = np.random.rand(N)
colors = np.random.rand(N)
area = (30 * np.random.rand(N)) ** 2 #
plt.scatter(x, y, s=area, c=colors, alpha=0.5) # 画散点图，设置颜色及透明度，面积和颜色都是通过一个长度50的列表来生成
plt.title("RUNOOB Scatter Test") # 设置标题
plt.show()
x = np.array([5, 7, 8, 7, 2, 17, 2, 9, 4, 11, 12, 9, 6])
y = np.array([99, 86, 87, 88, 111, 86, 103, 87, 94, 78, 77, 85, 86])
colors = np.array([0, 10, 20, 30, 40, 45, 50, 55, 60, 70, 80, 90, 100])
plt.scatter(x, y, c=colors, cmap='viridis')
plt.colorbar() #加上颜色条，颜色通过cmap参数修改
plt.show()
散点图.png
散点图加颜色条.png
