情节排序/分层julia pyplot [英] plot ordering/layering julia pyplot

问题描述

我有一个子图可以绘制一条线(x，y)和一个特定点(xx，yy).我想高亮(xx，yy)，所以用scatter绘制了它.但是，即使我在原始绘图之后对其进行排序，新点仍会显示在原始线的后面.我怎样才能解决这个问题?下面是MWE.

I have a subplot that plots a line (x,y) and a particular point (xx,yy). I want to highligh (xx,yy), so I've plotted it with scatter. However, even if I order it after the original plot, the new point still shows up behind the original line. How can I fix this? MWE below.

x = 1:10
y = 1:10
xx = 5
yy = 5
fig, ax = subplots()
ax[:plot](x,y)
ax[:scatter](xx,yy, color="red", label="h_star", s=100)
legend()
xlabel("x")
ylabel("y")
title("test")
grid("on")

推荐答案

您可以使用参数zorder更改将哪些图显示在彼此上方. 此处所示的matplotlib示例给出了简要说明:

You can change which plots are displayed on top of each other with the argument zorder. The matplotlib example shown here gives a brief explanation:

轴的默认绘制顺序是面片，线条，文本.这 顺序由zorder属性确定.以下默认值 被设置

The default drawing order for axes is patches, lines, text. This order is determined by the zorder attribute. The following defaults are set

Artist                      Z-order

Patch / PatchCollection      1

Line2D / LineCollection      2

Text                         3

您可以通过设置zorder来更改单个艺术家的顺序. 任何单独的plot()调用都可以为该zorder设置一个值 特定项目.

You can change the order for individual artists by setting the zorder. Any individual plot() call can set a value for the zorder of that particular item.

基于问题的代码的完整示例，使用 python 如下所示:

A full example based on the code in the question, using python is shown below:

import matplotlib.pyplot as plt

x = range(1,10)
y = range(1,10)
xx = 5
yy = 5
fig, ax = plt.subplots()
ax.plot(x,y)

# could set zorder very high, say 10, to "make sure" it will be on the top
ax.scatter(xx,yy, color="red", label="h_star", s=100, zorder=3)

plt.legend()
plt.xlabel("x")
plt.ylabel("y")
plt.title("test")
plt.grid("on")

plt.show()

哪个给:

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