python数据分析之员工个人信息可视化
一、实验目的
(1)熟练使用Counter类进行统计
(2)掌握pandas中的cut方法进行分类
(3)掌握matplotlib第三方库,能熟练使用该三方库库绘制图形
二、实验内容
采集到的数据集如下表格所示:
三、实验要求
1.按照性别进行分类,然后分别汇总男生和女生总的收入,并用直方图进行展示。
2.男生和女生各占公司总人数的比例,并用扇形图进行展示。
3.按照年龄进行分类(20-29岁,30-39岁,40-49岁),然后统计出各个年龄段有多少人,并用直方图进行展示。
import pandas as pd import matplotlib.pyplot as plt from collections import Counter info = [{"name": "E001", "gender": "man", "age": "34", "sales": "123", "income": 350}, {"name": "E002", "gender": "feman", "age": "40", "sales": "114", "income": 450}, {"name": "E003", "gender": "feman", "age": "37", "sales": "135", "income": 169}, {"name": "E004", "gender": "man", "age": "30", "sales": "139", "income": 189}, {"name": "E005", "gender": "feman", "age": "44", "sales": "117", "income": 183}, {"name": "E006", "gender": "man", "age": "36", "sales": "121", "income": 80}, {"name": "E007", "gender": "man", "age": "32", "sales": "133", "income": 166}, {"name": "E008", "gender": "feman", "age": "26", "sales": "140", "income": 120}, {"name": "E009", "gender": "man", "age": "32", "sales": "133", "income": 75}, {"name": "E010", "gender": "man", "age": "36", "sales": "133", "income": 40} ] # 读取数据 def get_data(): df = pd.DataFrame(info)#DataFrame是一个以命名列方式组织的分布式数据集 df[["age"]] = df[["age"]].astype(int) # 数据类型转为int df[["sales"]] = df[["sales"]].astype(int) # 数据类型转为int return df def group_by_gender(df): var = df.groupby('gender').sales.sum()#groupby将元素通过函数生成相应的Key,数据就转化为Key-Value格式,之后将Key相同的元素分为一组 fig = plt.figure() ax1 = fig.add_subplot(211)#2*1个网格,1个子图 ax1.set_xlabel('Gender') # x轴标签 ax1.set_ylabel('Sum of Sales') # y轴标签 ax1.set_title('Gender wise Sum of Sales') # 设置图标标题 var.plot(kind='bar') plt.show() # 显示 def group_by_age(df): age_list = [20, 30, 40, 50] res = pd.cut(df['age'], age_list, right=False) count_res = pd.value_counts(res) df_count_res = pd.DataFrame(count_res) print(df_count_res) plt.hist(df['age'], bins=age_list, alpha=0.7) # age_list 根据年龄段统计 # 显示横轴标签 plt.xlabel("nums") # 显示纵轴标签 plt.ylabel("ages") # 显示图标题 plt.title("pic") plt.show() def gender_count(df): res = df['gender'].value_counts() df_res = pd.DataFrame(res) label_list = df_res.index plt.axis('equal') plt.pie(df_res['gender'], labels=label_list, autopct='%1.1f%%', shadow=True, # 设置阴影 explode=[0, 0.1]) # 0 :扇形不分离,0.1:分离0.1单位 plt.title('gender ratio') plt.show() print(df_res) print(label_list) if __name__ == '__main__': data = get_data() group_by_gender(data) gender_count(data) group_by_age(data)
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