設置joyplot的x軸標籤

Question

我寫下面的代碼來可視化一個joyplot。當試圖改變使用axes.set_xticks x軸的標籤，我得到AttributeError: 'list' object has no attribute 'set_xticks'

import joypy 
import pandas as pd 
from matplotlib import pyplot as plt 

data = pd.DataFrame.from_records([['twitter', 1], 
['twitter', 6], 
['wikipedia', 1], 
['wikipedia', 3], 
['indymedia', 1], 
['indymedia', 9]], columns=['platform','day']) 

# Get number of days in the dataset 
numdays = max(set(data['day'].tolist())) 

# Generate date strings from a manually set start date 
start_date = "2010-01-01" 
dates = pd.date_range(start_date, periods=numdays) 
dates = [str(date)[:-9] for date in dates] 

fig, axes = joypy.joyplot(data,by="platform") 
axes.set_xticks(range(numdays)); axes.set_xticklabels(dates) 

plt.show() 

預期的輸出應該類似於以下但從dates日期爲ticklabels。

Answer 1

由於joypy.joyplot(..)回報figure，axes和axes元組應該是軸的列表中，您可能需要設置標籤的最後軸，

axes[-1].set_xticks(range(numdays)) 
axes[-1].set_xticklabels(dates) 

Answer 2

爲了日期地塊與python matplotlib你應該使用plot_date函數。

圖，AX = plt.subplots（）
ax.plot_date（日期，數據1， ' - '）

我把完整的例子在引擎收錄，按照鏈接： https://pastebin.com/sVPUZaeM

import numpy as np 
import pandas as pd 
import matplotlib.pyplot as plt 
from matplotlib.dates import DateFormatter 
from random import randrange, random 
from datetime import datetime 

#generate date list 
start_date = np.datetime64('2010-01-01').astype(datetime) 
numdays = 10 
dates = pd.date_range(start_date, periods=numdays) 

#Generate data example 
data1 = [(random()+idx)**1.2 for idx in range(len(dates))] 
data2 = [(random()+idx)**1.5 for idx in range(len(dates))] 

#plot 
fig, ax = plt.subplots() 
ax.plot_date(dates, data1, '-') 
ax.plot_date(dates, data2, '-') 

#set the label for x and y and title 
plt.title('Matplot lib dates wc example') 
plt.xlabel('Dates') 
plt.ylabel('Random values example') 

#date format 
ax.fmt_xdata = DateFormatter('%Y%m%d') 
ax.grid(True) 
fig.autofmt_xdate() 

plt.show() 

Python版本成功測試：2.7.12
此代碼生成：this follow plot