python 如何在matplotlib中切换轴？
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How to switch axes in matplotlib?
提问by Daehyok Shin
I like to switch x axis with y axis after plotting a graph with matplotlib? Any easy way for it? Thanks in advance.
我喜欢在用 matplotlib 绘制图形后用 y 轴切换 x 轴？有什么简单的方法吗？提前致谢。
回答by raphael
I guess this would be a way to do it in case you really want to change data of an existing plot:
我想如果您真的想更改现有图的数据，这将是一种方法：
execute this code first to get a figure:
首先执行此代码以获取图形：
# generate a simple figure
f, ax = plt.subplots()
ax.plot([1,2,3,4,5], [5,6,7,8,9])
ax.set_xlim([0, 10])
ax.set_ylim([0, 10])
and then use this to switch the data of an existing line
然后使用它来切换现有行的数据
# get data from first line of the plot
newx = ax.lines[0].get_ydata()
newy = ax.lines[0].get_xdata()
# set new x- and y- data for the line
ax.lines[0].set_xdata(newx)
ax.lines[0].set_ydata(newy)
回答by G?khan Sever
You can simply switch x and y parameters in the plot function:
您可以简单地在 plot 函数中切换 x 和 y 参数：
I[3]: x = np.linspace(0,2*np.pi, 100)
I[4]: y = np.sin(x)
I[5]: plt.plot(x,y)
I[6]: plt.figure(); plt.plot(y,x)
