将旋转的 xticklabels 与其各自的 xticks 对齐 [英] Aligning rotated xticklabels with their respective xticks

问题描述

检查下图的 x 轴.如何将标签向左移动一点，以便它们与各自的刻度对齐?

Check the x axis of the figure below. How can I move the labels a bit to the left so that they align with their respective ticks?

我正在使用以下方法旋转标签:

I'm rotating the labels using:

ax.set_xticks(xlabels_positions)
ax.set_xticklabels(xlabels, rotation=45)

但是，如您所见，旋转以文本标签的中间为中心.这使得它们看起来像是向右移动.

But, as you can see, the rotation is centered on the middle of the text labels. Which makes it look like they are shifted to the right.

我试过用这个来代替:

ax.set_xticklabels(xlabels, rotation=45, rotation_mode="anchor")

...但它没有做我想要的.而 "anchor" 似乎是 rotation_mode 参数允许的唯一值.

... but it doesn't do what I wished for. And "anchor" seems to be the only value allowed for the rotation_mode parameter.

推荐答案

可以设置刻度标签的水平对齐方式，见下例.如果您想象旋转标签周围有一个矩形框，您希望矩形的哪一边与刻度点对齐?

You can set the horizontal alignment of ticklabels, see the example below. If you imagine a rectangular box around the rotated label, which side of the rectangle do you want to be aligned with the tickpoint?

根据您的描述，您想要:ha='right'

Given your description, you want: ha='right'

n=5

x = np.arange(n)
y = np.sin(np.linspace(-3,3,n))
xlabels = ['Ticklabel %i' % i for i in range(n)]

fig, axs = plt.subplots(1,3, figsize=(12,3))

ha = ['right', 'center', 'left']

for n, ax in enumerate(axs):
    ax.plot(x,y, 'o-')
    ax.set_title(ha[n])
    ax.set_xticks(x)
    ax.set_xticklabels(xlabels, rotation=40, ha=ha[n])

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