Matplotlib控制哪个图在顶部 [英] Matplotlib control which plot is on top

问题描述

我想知道是否有一种方法可以控制在一个轴上绘制多个图的情况下，哪个图位于其他图的顶部.一个例子:

I am wondering if there is a way to control which plot lies on top of other plots if one makes multiple plots on one axis. An example:

如您所见，绿色系列位于蓝色系列的顶部，两个系列均位于黑点的顶部(这是我用散点图绘制的).我希望黑点位于两个系列(线条)的顶部.

As you can see, the green series is on top of the blue series, and both series are on top of the black dots (which I made with a scatter plot). I would like the black dots to be on top of both series (lines).

我首先使用以下代码进行了

I first did the above with the following code

plt.plot(series1_x, series1_y)
plt.plot(series2_x, series2_y)
plt.scatter(series2_x, series2_y)

然后我尝试了以下

fig = plt.figure()
ax1 = fig.add_subplot(111)
ax1.plot(series1_x, series1_y)

ax2 = fig.add_subplot(111)
ax2.plot(series2_x, series2_y)

ax3 = fig.add_subplot(111)
ax3.scatter(series2_x, series2_y)

还有一些变化，但是没有运气.

And some variations on that, but no luck.

在plot函数上交换会影响在哪个图的顶部，但是无论我将scatter函数放在何处，线条都在点的顶部.

Swapping around the plot functions has an effect on which plot is on top, but no matter where I put the scatter function, the lines are on top of the dots.

注意:

我在Windows 10上使用Python 3.5(此示例)，但在Ubuntu上主要使用Python 3.4.

I am using Python 3.5 on Windows 10 (this example), but mostly Python 3.4 on Ubuntu.

注意2:

我知道这看似无关紧要的问题，但是在某些情况下，点顶部的序列是如此密集，以至于点的颜色变得模糊不清，在这种情况下，我需要我的读者清楚地看到哪个点是什么颜色，因此为什么我需要将点放在顶部.

I know this may seem like a trivial issue, but I have a case where the series on top of the dots are so dense that the colour of the dots get obscured, and in those cases I need my readers to clearly see which dots are what colour, hence why I need the dots to be on top.

推荐答案

使用 zorder kwarg zorder越低，则图越靠后，例如

Use the zorder kwarg where the lower the zorder the further back the plot, e.g.

plt.plot(series1_x, series1_y, zorder=1)
plt.plot(series2_x, series2_y, zorder=2)
plt.scatter(series2_x, series2_y, zorder=3)

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