python数据分析

# -*- coding: utf-8 -*-
"""
Spyder Editor

This is a temporary script file.
"""
import pandas as pd
from matplotlib import pyplot as plt

##读取数据
url = r"F:\data\catering_fish_congee.xls"
data = pd.read_excel(url,names=['date','sale'])

plt.rcParams['font.sans-serif'] = ['SimHei'] #显示中文
plt.rcParams['axes.unicode_minus'] = False

#箱型图
plt.figure()
p = data.boxplot(return_type=('dict'))
x = p['fliers'][0].get_xdata()
y = p['fliers'][0].get_ydata()
y.sort()
plt.title('箱型图：3043') #加标题

# 直方图
bins = [0,500,1000,1500,2000,2500,3000,3500,4000]
labels = ['[0,500)','[500,1000)','[1000,1500)','[1500,2000)',
'[2000,2500)','[2500,3000)','[3000,3500)','[3500,4000)']

data['sale分层'] = pd.cut(data.sale, bins, labels=labels)
aggResult = data.groupby(by=['sale分层'])['sale'].agg([("sale","count")])

pAggResult = round(aggResult/aggResult.sum(), 2, ) * 100

plt.figure(figsize=(10,6)) # 设置图框大小尺寸
pAggResult['sale'].plot(kind='bar',width=0.8,fontsize=10) # 绘制频率直方图
plt.title('条形图：3043',fontsize=20)
plt.show()

# -*- coding: utf-8 -*-
"""
Created on Sun Feb 26 19:05:06 2023

@author: LIUYUEXIANG
"""

import pandas as pd
import matplotlib.pyplot as plt #导入绘图包

plt.rcParams['font.sans-serif'] = ['SimHei'] #解决中文显示问题
plt.rcParams['axes.unicode_minus'] = False # 解决中文显示问题

url = r"F:\data\catering_dish_profit.xls"
data = pd.read_excel(url)

#饼图
plt.figure(figsize=(6,6))#将画布设定为正方形，则绘制的饼图是正圆
plt.pie(data['盈利'], labels=data['菜品名'])
plt.title('饼图：3043') #加标题
plt.show()

#条形图
plt.figure(figsize=(8,4))
plt.bar(data['菜品名'],data['盈利'])
plt.xlabel('菜品')
plt.ylabel('销量')
plt.title('条形图：3043') #加标题
plt.show()

#散点图
years = data['菜品名']
turnovers = data['盈利']
plt.figure()
plt.scatter(years, turnovers, c='red', s=100, label='销量')
plt.xlabel("菜品", fontdict={'size': 16})
plt.ylabel("销量", fontdict={'size': 16})
plt.title("散点图：3043", fontdict={'size': 20})
plt.legend(loc='best')
plt.show()