Python 如何获取要绘制的 matplotlib Axes 实例？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/15067668/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to get a matplotlib Axes instance to plot to?
提问by kramer65
I need to make a candlestick chart (something like this) using some stock data. For this I want to use the function matplotlib.finance.candlestick(). To this function I need to supply quotes and "an Axes instance to plot to". I created some sample quotes as follows:
我需要使用一些股票数据制作烛台图（类似这样的东西）。为此，我想使用函数matplotlib.finance.candlestick()。对于这个函数，我需要提供引号和“要绘制到的 Axes 实例”。我创建了一些示例报价如下：
quotes = [(1, 5, 6, 7, 4), (2, 6, 9, 9, 6), (3, 9, 8, 10, 8), (4, 8, 8, 9, 8), (5, 8, 11, 13, 7)]
I now also need an Axes instance though, at which I am a bit lost. I created plots before using matplotlib.pyplot. I think I now need to do something with matplotlib.axesthough, but I am unsure what exactly.
不过，我现在还需要一个 Axes 实例，对此我有点迷茫。我在使用 matplotlib.pyplot 之前创建了绘图。我想我现在需要对matplotlib.axes做一些事情，但我不确定到底是什么。
Could anybody help me out a little bit here? All tips are welcome!
有人可以帮我一下吗？欢迎所有提示！
采纳答案by wim
Use the gca("get current axes") helper function:
使用gca（“获取当前轴”）辅助函数：
ax = plt.gca()
Example:
例子：
import matplotlib.pyplot as plt
import matplotlib.finance
quotes = [(1, 5, 6, 7, 4), (2, 6, 9, 9, 6), (3, 9, 8, 10, 8), (4, 8, 8, 9, 8), (5, 8, 11, 13, 7)]
ax = plt.gca()
h = matplotlib.finance.candlestick(ax, quotes)
plt.show()
回答by Francesco Montesano
You can either
你可以
fig, ax = plt.subplots() #create figure and axes
candlestick(ax, quotes, ...)
or
或者
candlestick(plt.gca(), quotes) #get the axis when calling the function
The first gives you more flexibility. The second is much easier if candlestick is the only thing you want to plot
第一个为您提供了更大的灵活性。如果烛台是您唯一想要绘制的东西，则第二个要容易得多
