matplotlib绘制散点图（温度示例）

ゞ浴缸里的玫瑰 2023-02-20 12:16 4阅读 0赞

## 绘制散点图 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21lcmlkaWFuMDAy_size_16_color_FFFFFF_t_70]

from matplotlib import pyplot as plt
    from matplotlib import font_manager
    
    my_font = font_manager.FontProperties(fname='C:/Windows/Fonts/msyhl.ttc')
    
    y_3 = [11, 17, 16, 11, 12, 11, 12, 6, 6, 7, 8, 9, 12, 15, 14, 17, 18, 21, 16, 17, 20, 14, 15, 15, 15, 19, 21, 22, 22,
           22,
           23]
    y_10 = [26, 26, 28, 19, 21, 17, 16, 19, 18, 20, 20, 19, 22, 23, 17, 20, 21, 20, 22, 15, 11, 15, 5, 13, 17, 10, 11, 13,
            12,
            13, 6]
    
    x_3 = range(1, 32)
    x_10 = range(51, 82)
    # 设置图形大小
    plt.figure(figsize=(20, 8), dpi=80)
    
    # 使用scatter绘制散点图，和之前绘制折线图的唯一区别
    plt.scatter(x_3, y_3, label='3月')
    plt.scatter(x_10, y_10, label='10月')
    
    _x = list(x_3) + list(x_10)
    _xticks_labels = ["3月{}日".format(i) for i in x_3]
    _xticks_labels += ["10月{}日".format(i - 50) for i in x_10]
    plt.xticks(_x[::3], _xticks_labels[::3], fontproperties=my_font, rotation=45)
    
    plt.xlabel("日 期", fontproperties=my_font)
    plt.ylabel("温度(℃)", fontproperties=my_font)
    plt.title("3月份和10月份温度散点图", fontproperties=my_font)
    
    # 添加图例
    plt.legend(loc='upper left', prop=my_font)
    
    plt.show()

结果显示：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21lcmlkaWFuMDAy_size_16_color_FFFFFF_t_70 1]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21lcmlkaWFuMDAy_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200626200942942.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21lcmlkaWFuMDAy,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21lcmlkaWFuMDAy_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200626201008573.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21lcmlkaWFuMDAy,size_16,color_FFFFFF,t_70