Python 编程,绘图与矩阵,详细在图里,求代码,急用答:计算A的行列式,A的倒数,A沿行方向的乘积,A沿列方向的累加和的程序如下 import numpy as np A=np.array([[1,4,8],[2,4,1],[4,4,6]])print(np.linalg.det(A))print(np.linalg.det(1/A))print(A.prod(axis=1))print(A.sum(axis=0))...
Python使用matplotlib绘图,如何在绘图结果上显示每个点的坐标答:import matplotlib.pyplot as plt import randomx1 = list(range(10))y1 = [random.randint(0,10) for i in range(10)] plt.plot(x1, y1, color='r',markerfacecolor='blue',marker='o') for a, b in zip(x1, y1): plt.text(a, b, (a,b),ha='center', va='bottom...
python matplotlib 绘制带有刻度的箭头?答:绘制箭头例子 def arrow():plt.rcParams['font.sans-serif'] = ['SimHei']plt.style.use('seaborn-deep')fig = plt.figure(figsize=(16, 9),dpi=75)ax = fig.add_subplot(121)x=np.array([1,2,3,4])y=np.array([2,4,6,8])ax.plot(x,y,color = 'b')ax.annotate("",xy=...