Python 更改 matplotlib 轴设置
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change matplotlib axis settings
提问by Falmarri
How do I get control over the axis settings of a pyplot plot. I have simply done
如何控制 pyplot 图的轴设置。我只是做了
pylab.plot(*self.plot_generator(low, high))
pylab.show()
and I get this which is what I want
我得到了这就是我想要的
but I want the x axis to be at 0 instead of at the bottom. How would I do that?
但我希望 x 轴位于 0 而不是底部。我该怎么做？
采纳答案by doug
# create some data
x = np.linspace(-np.pi,np.pi,100)
y = np.cos(2.5*x)
fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(x,y, mfc='orange', mec='orange', marker='.')
# using 'spines', new in Matplotlib 1.0
ax.spines['left'].set_position('zero')
ax.spines['right'].set_color('none')
ax.spines['bottom'].set_position('zero')
ax.spines['top'].set_color('none')
ax.spines['left'].set_smart_bounds(True)
ax.spines['bottom'].set_smart_bounds(True)
ax.xaxis.set_ticks_position('bottom')
ax.yaxis.set_ticks_position('left')
ax.axhline(linewidth=2, color='blue')
ax.axvline(linewidth=2, color='blue')
show()
回答by amillerrhodes
To set start of x-axis to 0:
要将 x 轴的起点设置为 0：
pylab.xlim(xmin=0)
To set start of y-axis to 0:
要将 y 轴的起点设置为 0：
pylab.ylim(ymin=0)
Put one of these lines (or both if you'd like) after the pylab.plotcall.
在pylab.plot通话后放置其中一行（如果您愿意，也可以放置两行）。
