python - 绘制散点图时的问题

Question

我正在使用 matplotlib.pyplot.scatter 绘制一些简单的散点图。但是，出现了错误，我找不到解决方案。下面是绘制散点图的代码:

 # xActA, yActA, xActQ, yActQ are all lists with same dimensions.
ax1 = scatter(xActA, yActA, color = 'blue',s = 20, label = 'Answers', linestyle = 'o')
ax2 = scatter(xActQ, yActQ, color = 'black', s = 20, label = 'Questions', linestyle = 'o')
ax1.set_label('Answers')
ax2.set_label('Questions')
xscale('log')
yscale('log')
title('User activity')
xlabel('Number of posts')
ylabel('Number of users')
legend()
f1.show()
f1.savefig('figure7_test.png')

并且没有错误，但绘图不包含任何点。

数据如下:

xActA = [0, 1, 2, 3, 4, 5, 6, 129, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
             18, 147, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,
             35, 36, 39, 40, 7, 45, 46, 49, 50, 52, 53, 183, 59, 63, 65, 69,
             70, 72, 73, 55, 77, 78, 84, 85, 43, 215, 88, 100, 94, 131, 167,
             19, 375, 122, 125, 149]

  len(xActA) = 70

  yActA = [1212, 822, 194, 94, 61, 44, 24, 1, 26, 20, 11, 16, 10, 8, 5, 8,
             5, 5, 3, 1, 4, 4, 5, 3, 2, 3, 4, 3, 1, 2, 2, 3, 2, 1, 2, 2, 2, 2,
             31, 2, 1, 1, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
             1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1]

  len(yActA) = 70

  xActQ [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23,    24, 25, 29, 36, 40, 45, 48, 50, 55, 67, 124]
  len(xActQ) = 34

  yActQ [204, 242, 150, 50, 49, 27, 5, 9, 4, 2, 6, 3, 2, 8, 4, 5, 1, 3, 3, 1, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
  len(yActQ) = 24

第二个错误是使用另一个数据集引发的。我正在检查数据...对于之前不清楚的描述很抱歉。

Answer 1

问题出在 linestyle='o' 上。 'o' 指令是一个marker，而不是一个linestyle，因此将linestyle 替换为marker 在你的前两行代码中。

您可以看到scatter 的完整标记列表here .