Add files via upload

eastmountyxz · web-flow · commit 6450df65c5ff · 2021-01-13T21:30:08.000+08:00
diff --git a/blog34-based-opencv/blog34_05.py b/blog34-based-opencv/blog34_05.py
@@ -0,0 +1,30 @@
+# coding: utf-8
+import numpy as np
+import matplotlib.pyplot as plt
+
+#生成随机数表示点的坐标
+x = np.random.randn(200)
+y = np.random.randn(200)
+
+#生成随机点的大小及颜色
+size = 50*np.random.randn(200) 
+colors = np.random.rand(200)
+
+#用来正常显示中文标签
+plt.rc('font', family='SimHei', size=13)
+
+#用来正常显示负号
+plt.rcParams['axes.unicode_minus'] = False  
+
+#绘制散点图
+plt.scatter(x, y, s=size, c=colors)
+
+#设置x、y轴名称
+plt.xlabel(u"x坐标")  
+plt.ylabel(u"y坐标")
+
+#绘制标题
+plt.title(u"Matplotlib绘制散点图")
+
+#显示图像
+plt.show()
