如何在matplotlib中首先绘制线条并指向最后一点

I have a simple plot with several sets of points and lines connecting each set. I want the points to be plotted on top of the lines (so that the line doesn't show inside the point). Regardless of order of the plot and scatter calls, this plot comes out the same, and not as I'd like. Is there a simple way to do it?

我有一个简单的情节，有几组连接每组的点和线。我希望将点绘制在线的顶部（以便该线不显示在该点内）。无论情节和散布调用的顺序如何，这个情节都是相同的，而不是我想要的。有一个简单的方法吗？

import math
import matplotlib.pyplot as plt

def poisson(m):
    def f(k):
        e = math.e**(-m)
        f = math.factorial(k)
        g = m**k
        return g*e/f
    return f

R = range(20)
L = list()
means = (1,4,10)
for m in means:
    f = poisson(m)
    L.append([f(k) for k in R])
colors = ['r','b','purple']

for c,P in zip(colors,L):
    plt.plot(R,P,color='0.2',lw=1.5)
    plt.scatter(R,P,s=150,color=c)

ax = plt.axes()
ax.set_xlim(-0.5,20)
ax.set_ylim(-0.01,0.4)
plt.savefig('example.png')

1 个解决方案

#1

You need to set the Z-order.

您需要设置Z顺序。

plt.plot(R,P,color='0.2',lw=1.5, zorder=1)
plt.scatter(R,P,s=150,color=c, zorder=2)

Check out this example. http://matplotlib.sourceforge.net/examples/pylab_examples/zorder_demo.html

看看这个例子。 http://matplotlib.sourceforge.net/examples/pylab_examples/zorder_demo.html

#1