import matplotlib.pyplot as plt def drawArrow(A,B): fig = plt.figure() ax = fig.add_subplot(111) """ 箭头起始位置(A[0],A[1])和终点位置(B[0],B[1]) length_includes_head = True:表示增加的长度包含箭头部分 head_width:箭头的宽度 head_length:箭头的长度 fc:filling color(箭头填充的颜色) ec:edge color(边框颜色) """ ax.arrow(A[0],A[1],B[0]-A[0],B[1]-A[1],length_includes_head = True,head_width = 0.5,width=0.25,head_length = 0.5,fc = 'r',ec = 'r') ax.plot(3, 3,color='k',alpha=1,marker='o',markersize='1') #,markersize='1' ax.set_xlim(0,10) #设置图形的范围,默认为[0,1] ax.set_ylim(0,10) #设置图形的范围,默认为[0,1] ax.grid() #添加网格 ax.set_aspect('equal') #x轴和y轴等比例 plt.show() plt.tight_layout() # A = [1,2,3,4,5,6,7] # B = [3,4,5,6,7,8,9] A=[3,1] B=[3,4] drawArrow(A,B)
另外一种 利用 annotate 也可以 打标签和画箭头
ax.annotate('', xy=(lon_max[i], lat_max[i]+0.08), xytext=(lon_max[i]-0.001, lat_max[i]), arrowprops=dict(arrowstyle="->", color="r", hatch='*'))
标签:head,plt,python,max,箭头,图上,arrow,ax,color From: https://www.cnblogs.com/xiaoxiaoshuaishuai0219/p/17552901.html