语法
plt.scatter(x, y, s=20, c=\’b\’)
大小s默认为20，s=0时点不显示；颜色c默认为蓝色。
为每一个点指定大小和颜色
有时我们需要为每一个点指定大小和方向，以区分不同的点。这时，可以向s和c传入列表。如：
import matplotlib.pyplot as plt import numpy as np x = list(range(1, 7)) plt.scatter(x, x, s=10*np.array(x)**2, c=x) plt.show()
参数s=[1, 4, 9, 16, 25, 36]，c=[1, 2, 3, 4, 5, 6]，输出为：
其中颜色列表的意思是，在下图的颜色带中按比例取颜色。如 s=[1, 2] 表示的两个颜色分别是：最左边的颜色和最右边的颜色；s=[100, 103, 150, 200] 的四个颜色分别是：最左边的颜色，最左边的颜色（100和103差别不大），中间的颜色，最右边的颜色。
补充知识：matplotlib 画图颜色参数值及对应色卡
matplotlib 色卡对应参数值
cnames = {
\'aliceblue\': \'#F0F8FF\',
\'antiquewhite\': \'#FAEBD7\',
\'aqua\': \'#00FFFF\',
\'aquamarine\': \'#7FFFD4\',
\'azure\': \'#F0FFFF\',
\'beige\': \'#F5F5DC\',
\'bisque\': \'#FFE4C4\',
\'black\': \'#000000\',
\'blanchedalmond\': \'#FFEBCD\',
\'blue\': \'#0000FF\',
\'blueviolet\': \'#8A2BE2\',
\'brown\': \'#A52A2A\',
\'burlywood\': \'#DEB887\',
\'cadetblue\': \'#5F9EA0\',
\'chartreuse\': \'#7FFF00\',
\'chocolate\': \'#D2691E\',
\'coral\': \'#FF7F50\',
\'cornflowerblue\': \'#6495ED\',
\'cornsilk\': \'#FFF8DC\',
\'crimson\': \'#DC143C\',
\'cyan\': \'#00FFFF\',
\'darkblue\': \'#00008B\',
\'darkcyan\': \'#008B8B\',
\'darkgoldenrod\': \'#B8860B\',
\'darkgray\': \'#A9A9A9\',
\'darkgreen\': \'#006400\',
\'darkkhaki\': \'#BDB76B\',
\'darkmagenta\': \'#8B008B\',
\'darkolivegreen\': \'#556B2F\',
\'darkorange\': \'#FF8C00\',
\'darkorchid\': \'#9932CC\',
\'darkred\': \'#8B0000\',
\'darksalmon\': \'#E9967A\',
\'darkseagreen\': \'#8FBC8F\',
\'darkslateblue\': \'#483D8B\',
\'darkslategray\': \'#2F4F4F\',
\'darkturquoise\': \'#00CED1\',
\'darkviolet\': \'#9400D3\',
\'deeppink\': \'#FF1493\',
\'deepskyblue\': \'#00BFFF\',
\'dimgray\': \'#696969\',
\'dodgerblue\': \'#1E90FF\',
\'firebrick\': \'#B22222\',
\'floralwhite\': \'#FFFAF0\',
\'forestgreen\': \'#228B22\',
\'fuchsia\': \'#FF00FF\',
\'gainsboro\': \'#DCDCDC\',
\'ghostwhite\': \'#F8F8FF\',
\'gold\': \'#FFD700\',
\'goldenrod\': \'#DAA520\',
\'gray\': \'#808080\',
\'green\': \'#008000\',
\'greenyellow\': \'#ADFF2F\',
\'honeydew\': \'#F0FFF0\',
\'hotpink\': \'#FF69B4\',
\'indianred\': \'#CD5C5C\',
\'indigo\': \'#4B0082\',
\'ivory\': \'#FFFFF0\',
\'khaki\': \'#F0E68C\',
\'lavender\': \'#E6E6FA\',
\'lavenderblush\': \'#FFF0F5\',
\'lawngreen\': \'#7CFC00\',
\'lemonchiffon\': \'#FFFACD\',
\'lightblue\': \'#ADD8E6\',
\'lightcoral\': \'#F08080\',
\'lightcyan\': \'#E0FFFF\',
\'lightgoldenrodyellow\': \'#FAFAD2\',
\'lightgreen\': \'#90EE90\',
\'lightgray\': \'#D3D3D3\',
\'lightpink\': \'#FFB6C1\',
\'lightsalmon\': \'#FFA07A\',
\'lightseagreen\': \'#20B2AA\',
\'lightskyblue\': \'#87CEFA\',
\'lightslategray\': \'#778899\',
\'lightsteelblue\': \'#B0C4DE\',
\'lightyellow\': \'#FFFFE0\',
\'lime\': \'#00FF00\',
\'limegreen\': \'#32CD32\',
\'linen\': \'#FAF0E6\',
\'magenta\': \'#FF00FF\',
\'maroon\': \'#800000\',
\'mediumaquamarine\': \'#66CDAA\',
\'mediumblue\': \'#0000CD\',
\'mediumorchid\': \'#BA55D3\',
\'mediumpurple\': \'#9370DB\',
\'mediumseagreen\': \'#3CB371\',
\'mediumslateblue\': \'#7B68EE\',
\'mediumspringgreen\': \'#00FA9A\',
\'mediumturquoise\': \'#48D1CC\',
\'mediumvioletred\': \'#C71585\',
\'midnightblue\': \'#191970\',
\'mintcream\': \'#F5FFFA\',
\'mistyrose\': \'#FFE4E1\',
\'moccasin\': \'#FFE4B5\',
\'navajowhite\': \'#FFDEAD\',
\'navy\': \'#000080\',
\'oldlace\': \'#FDF5E6\',
\'olive\': \'#808000\',
\'olivedrab\': \'#6B8E23\',
\'orange\': \'#FFA500\',
\'orangered\': \'#FF4500\',
\'orchid\': \'#DA70D6\',
\'palegoldenrod\': \'#EEE8AA\',
\'palegreen\': \'#98FB98\',
\'paleturquoise\': \'#AFEEEE\',
\'palevioletred\': \'#DB7093\',
\'papayawhip\': \'#FFEFD5\',
\'peachpuff\': \'#FFDAB9\',
\'peru\': \'#CD853F\',
\'pink\': \'#FFC0CB\',
\'plum\': \'#DDA0DD\',
\'powderblue\': \'#B0E0E6\',
\'purple\': \'#800080\',
\'red\': \'#FF0000\',
\'rosybrown\': \'#BC8F8F\',
\'royalblue\': \'#4169E1\',
\'saddlebrown\': \'#8B4513\',
\'salmon\': \'#FA8072\',
\'sandybrown\': \'#FAA460\',
\'seagreen\': \'#2E8B57\',
\'seashell\': \'#FFF5EE\',
\'sienna\': \'#A0522D\',
\'silver\': \'#C0C0C0\',
\'skyblue\': \'#87CEEB\',
\'slateblue\': \'#6A5ACD\',
\'slategray\': \'#708090\',
\'snow\': \'#FFFAFA\',
\'springgreen\': \'#00FF7F\',
\'steelblue\': \'#4682B4\',
\'tan\': \'#D2B48C\',
\'teal\': \'#008080\',
\'thistle\': \'#D8BFD8\',
\'tomato\': \'#FF6347\',
\'turquoise\': \'#40E0D0\',
\'violet\': \'#EE82EE\',
\'wheat\': \'#F5DEB3\',
\'white\': \'#FFFFFF\',
\'whitesmoke\': \'#F5F5F5\',
\'yellow\': \'#FFFF00\',
\'yellowgreen\': \'#9ACD32\'}
seaborn 的色卡对应参数值
装了seaborn扩展的话，在字典seaborn.xkcd_rgb中包含所有的xkcd crowdsourced color names。
使用的代码
plt.plot([1,2], lw=4, c=seaborn.xkcd_rgb[\’baby poop green\’])
以上这篇python matplotlib:plt.scatter() 大小和颜色参数详解就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持自学编程网。
