画图之小试牛刀

import pandas as pd
import matplotlib.pyplot as plt
catering_sale = "./data/catering_sale.xls"
data = pd.read_excel(catering_sale, index_col = '日期')
# print(data.describe())
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.rcParams['axes.unicode_minus'] = False
plt.figure()
p = data.boxplot(return_type = 'dict')
x = p['fliers'][0].get_xdata()
y = p['fliers'][0].get_ydata()
y.sort()
for i in range(len(x)):
if i > 0:
plt.annotate(y[i], xy = (x[i],y[i]), xytext=(x[i] + 0.05 - 0.8 / (y[i] - y[i-1]), y[i]))
else:
plt.annotate(y[i], xy = (x[i],y[i]), xytext=(x[i] + 0.08, y[i]))
plt.title('3142',fontsize=20)
plt.show()

import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
catering_sale = "./data/catering_fish_congee.xls"
data = pd.read_excel(catering_sale, names=['date','sale'])
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=np.size)
pAggResult = round(aggResult/aggResult.sum(),2) * 100
plt.figure(figsize=(10,6))
pAggResult['sale'].plot(kind='bar',width=0.8,fontsize=10)
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.title('3142',fontsize=20)
plt.show()

import pandas as pd
import matplotlib.pyplot as plt
catering_dish_profit = './data/catering_dish_profit.xls'
data = pd.read_excel(catering_dish_profit)
x = data['盈利']
labels = data['菜品名']
plt.figure(figsize=(8,6))
plt.pie(x,labels=labels)
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.title('3142',fontsize=20)
plt.axis('equal')
plt.show()
x = data['菜品名']
y = data['盈利']
plt.figure(figsize=(8,4))
plt.bar(x,y)
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.xlabel('菜品')
plt.ylabel('销量')
plt.title('3142',fontsize=20)
plt.show()

 

import pandas as pd
import matplotlib.pyplot as plt
data = pd.read_excel("./data/dish_sale.xls")
plt.figure(figsize=(8,4))
plt.plot(data['月份'],data['A部门'],color='green',label='A部门',marker='o')
plt.plot(data['月份'],data['B部门'],color='red',label='B部门',marker='s')
plt.plot(data['月份'],data['C部门'],color='skyblue',label='C部门',marker='x')
plt.legend()
plt.ylabel('销售额（万元）')
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.title('3142',fontsize=20)
plt.show()
data = pd.read_excel("./data/dish_sale_b.xls")
plt.figure(figsize=(8,4))
plt.plot(data['月份'],data['2012年'],color='green',label='2012年',marker='o')
plt.plot(data['月份'],data['2013年'],color='red',label='2013年',marker='s')
plt.plot(data['月份'],data['2014年'],color='skyblue',label='2014年',marker='x')
plt.legend()
plt.ylabel('销售额（万元）')
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.title('3142',fontsize=20)
plt.show()

 

import pandas as pd
import matplotlib.pyplot as plt
df_normal = pd.read_csv("./data/user.csv")
plt.figure(figsize=(8,4))
plt.plot(df_normal["Date"],df_normal["Eletricity"])
plt.xlabel("日期")
x_major_locator = plt.MultipleLocator(7)
ax = plt.gca()
ax.xaxis.set_major_locator(x_major_locator)
plt.ylabel("每日电量")
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.title('3142',fontsize=20)
plt.show()
df_steal = pd.read_csv("./data/Steal user.csv")
plt.figure(figsize=(10,9))
plt.plot(df_steal["Date"],df_steal["Eletricity"])
plt.xlabel("日期")
x_major_locator = plt.MultipleLocator(7)
ax = plt.gca()
ax.xaxis.set_major_locator(x_major_locator)
plt.ylabel("每日电量")
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.title('3142',fontsize=20)
plt.show()

)

 

 

 

 

import pandas as pd
import matplotlib.pyplot as plt
dish_profit = './data/catering_dish_profit.xls'
data = pd.read_excel(dish_profit,index_col='菜品名')
data = data['盈利'].copy()
data.sort_values(ascending=False)
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.rcParams['axes.unicode_minus'] = False
plt.figure()
data.plot(kind='bar')
plt.ylabel('盈利（元）')
p = 1.0 * data.cumsum()/data.sum()
p.plot(color='r',secondary_y=True,style='-o',linewidth=2)
plt.annotate(format(p[6], '.4%'), xy=(6, p[6]),
xytext=(6 * 0.9, p[6] * 0.9), arrowprops=dict(arrowstyle="->", connectionstyle="arc3,rad=.2"))
plt.ylabel('盈利（比例）')
plt.title('3142',fontsize=20)
plt.show()

import numpy as np
import matplotlib.pyplot as plt
plt.figure(figsize=(7,5))
plt.rcParams['axes.unicode_minus'] = False
x = np.linspace(0,2*np.pi,50)
y = np.sin(x)
plt.plot(x,y,'bp--')
plt.title('3142',fontsize=20)
plt.show()

import matplotlib.pyplot as plt
labels = 'Frogs','Hogs','Dogs','Logs'
sizes = [15,30,45,10]
colors = ['yellowgreen','gold','lightskyblue','lightcoral']
explode = (0,0.1,0,0)
plt.pie(sizes,explode=explode,labels=labels,colors=colors,autopct='%1.1f%%',shadow=True,startangle=90)
plt.axis('equal')
plt.title('3142',fontsize=20)
plt.show()

import matplotlib.pyplot as plt
import numpy as np
x = np.random.randn(1000)
plt.hist(x,10)
plt.title('3142',fontsize=20)
plt.show()

import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
x = np.random.randn(1000)
D = pd.DataFrame([x,x+1]).T
D.plot(kind='box')
plt.title('3142',fontsize=20)
plt.show()

import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.rcParams['axes.unicode_minus'] = False
x = pd.Series(np.exp(np.arange(20)))
plt.figure(figsize=(8,9))
ax1 = plt.subplot(2,1,1)
plt.title('3142',fontsize=20)
x.plot(label='原始数据图',legend=True)
ax1 = plt.subplot(2,1,2)
plt.title('3142',fontsize=20)
x.plot(logy=True,label='对数数据图',legend=True)
plt.show()

import matplotlib.pyplot as plt
import numpy as np
import pandas as pd
error = np.random.randn(10)
y = pd.Series(np.sin(np.arange(10)))
y.plot(yerr=error)
plt.title('3142',fontsize=20)
plt.show()

画图往往离不开matplotlib，numpy，pandas，学会运用这些才能更好更便捷画出想要的图。