3、有顏色棒的散點圖

import matplotlib.pyplot as plt

import numpy as np

plt.rcParams['font.sans-serif'] = ['SimHei']

plt.rcParams['axes.unicode_minus'] = False

rng = np.random.RandomState(0)

x = rng.randn(50)

y = rng.randn(50)

colors = rng.rand(50)

sizes = 500 * rng.rand(50)

plt.scatter(x, y, c=colors, s=sizes, alpha=0.4,

? ? ? ? ? ? cmap='viridis')

plt.colorbar()

# 右邊有顏色棒

plt.xlabel("x軸")

plt.ylabel("y軸")

plt.title("有顏色棒的散點圖")

plt.show()

# 顯示圖形