Python 如何在 Pandas 条形图中旋转 x 轴刻度标签
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How to rotate x-axis tick labels in Pandas barplot
提问by neversaint
With the following code:
使用以下代码：
import matplotlib
matplotlib.style.use('ggplot')
import matplotlib.pyplot as plt
import pandas as pd
df = pd.DataFrame({ 'celltype':["foo","bar","qux","woz"], 's1':[5,9,1,7], 's2':[12,90,13,87]})
df = df[["celltype","s1","s2"]]
df.set_index(["celltype"],inplace=True)
df.plot(kind='bar',alpha=0.75)
plt.xlabel("")
I made this plot:
我做了这个情节：
How can I rotate the x-axis tick labels to 0 degrees?
如何将 x 轴刻度标签旋转到 0 度？
I tried adding this but did not work:
我尝试添加这个但没有用：
plt.set_xticklabels(df.index,rotation=90)
采纳答案by EdChum
Pass param rot=0to rotate the xticks:
传递参数rot=0以旋转 xticks：
import matplotlib
matplotlib.style.use('ggplot')
import matplotlib.pyplot as plt
import pandas as pd
df = pd.DataFrame({ 'celltype':["foo","bar","qux","woz"], 's1':[5,9,1,7], 's2':[12,90,13,87]})
df = df[["celltype","s1","s2"]]
df.set_index(["celltype"],inplace=True)
df.plot(kind='bar',alpha=0.75, rot=0)
plt.xlabel("")
plt.show()
yields plot:
产量图：
回答by CPBL
The question is clear but the title is not as precise as it could be. My answer is for those who came looking to change the axislabel, as opposed to the tick labels,which is what the accepted answer is about. (The title has now been corrected).
问题很清楚，但标题并不像它可能的那样精确。我的答案是针对那些想要更改轴标签而不是刻度标签的人，这是公认的答案。（标题现已更正）。
for ax in plt.gcf().axes:
plt.sca(ax)
plt.xlabel(ax.get_xlabel(), rotation=90)
回答by Skromak
You can use set_xticklabels()
您可以使用 set_xticklabels()
ax.set_xticklabels(df['Names'], rotation=90, ha='right')
回答by caot
The follows might be helpful:
以下内容可能会有所帮助：
# Valid font size are xx-small, x-small, small, medium, large, x-large, xx-large, larger, smaller, None
plt.xticks(
rotation=45,
horizontalalignment='right',
fontweight='light',
fontsize='medium',
)
Here is the function xticks[reference]with example and API
def xticks(ticks=None, labels=None, **kwargs):
"""
Get or set the current tick locations and labels of the x-axis.
Call signatures::
locs, labels = xticks() # Get locations and labels
xticks(ticks, [labels], **kwargs) # Set locations and labels
Parameters
----------
ticks : array_like
A list of positions at which ticks should be placed. You can pass an
empty list to disable xticks.
labels : array_like, optional
A list of explicit labels to place at the given *locs*.
**kwargs
:class:`.Text` properties can be used to control the appearance of
the labels.
Returns
-------
locs
An array of label locations.
labels
A list of `.Text` objects.
Notes
-----
Calling this function with no arguments (e.g. ``xticks()``) is the pyplot
equivalent of calling `~.Axes.get_xticks` and `~.Axes.get_xticklabels` on
the current axes.
Calling this function with arguments is the pyplot equivalent of calling
`~.Axes.set_xticks` and `~.Axes.set_xticklabels` on the current axes.
Examples
--------
Get the current locations and labels:
>>> locs, labels = xticks()
Set label locations:
>>> xticks(np.arange(0, 1, step=0.2))
Set text labels:
>>> xticks(np.arange(5), ('Tom', 'Dick', 'Harry', 'Sally', 'Sue'))
Set text labels and properties:
>>> xticks(np.arange(12), calendar.month_name[1:13], rotation=20)
Disable xticks:
>>> xticks([])
"""
回答by Ankit Kumar Rajpoot
Try this -
尝试这个 -
plt.xticks(rotation=90)
