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import numpy as np
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import pandas as pd
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import matplotlib as mpl
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import matplotlib.pyplot as plt
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from matplotlib import font_manager
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font_path = r'E:\PycharmProjects\pythonProject\simsun.ttc'
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font_prop = font_manager.FontProperties(fname=font_path)
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#支持中文显示
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'''
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mpl.rcParams['font.family'] = 'Kaiti'
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# 使用非 unicode 的负号,当使用中文时候要设置
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mpl.rcParams['axes.unicode_minus'] = False
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# %matplotlib inline
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'''
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data = pd.read_csv(r'E:\PycharmProjects\pythonProject\航班信息\airport-ontime.csv')
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# data.info()
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#将Unnamed这列删除
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data.dropna(axis=1, how='all', inplace=True)
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# data.info()
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#查看是否有重复数据
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data.duplicated().any()
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data.drop_duplicates(inplace=True)
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# data.info()
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# 统计起飞是否延迟 饼图
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# print(data['DEP_DEL15'].head())
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dep_data = data['DEP_DEL15'].dropna()
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dep_delay = dep_data.value_counts()
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dep_delay.name = ''
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dep_delay.plot(kind='pie', labels=['起飞不延迟', '起飞延迟'], autopct='%.2f', textprops={'fontproperties': font_prop})
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plt.title('起飞延迟不延迟情况', {'fontproperties': font_prop})
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plt.show()
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# 统计到达延迟和到达不延迟所占比例 饼图
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s = data['ARR_DEL15'].dropna()
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delays = s.value_counts()
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# display(delays)
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delays.name = ''
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delays.plot(kind='pie', labels=['到达不延迟', '到达延迟'], autopct='%.2f', textprops={'fontproperties': font_prop})
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plt.title('到达延迟不延迟情况', {'fontproperties': font_prop})
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plt.show()
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# 统计机场航班起飞延迟数量 柱状图
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# 缺失值处理
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d = data[['ORIGIN_STATE_ABR', 'DEP_DEL15']].dropna()
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depart_delay_couots = d.groupby('ORIGIN_STATE_ABR')['DEP_DEL15'].sum()
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# 设置画布大小 figsize=(a,b) a 表示画布宽,b 表示画布高,单位英寸
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depart_delay_couots.sort_values(ascending=False).plot(kind='bar', figsize=(14, 6))
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plt.show()
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# 统计机场航班到达延迟数量
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# 缺失值处理
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d = data[['DEST_STATE_ABR', 'ARR_DEL15']].dropna()
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arrive_delay_couots = d.groupby('DEST_STATE_ABR')['ARR_DEL15'].sum()
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# 设置画布大小
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# figsize=(a,b)
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# a 表示画布宽,b 表示画布高,单位英寸
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arrive_delay_couots.sort_values(ascending=False).plot(kind='bar', figsize=(14, 6))
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plt.show()
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# 合并机场航班起飞和到达延迟
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delay_df = pd.DataFrame([depart_delay_couots, arrive_delay_couots]).T
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delay_df.columns = ['起飞延迟', '到达延迟']
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delay_df.sort_values('起飞延迟', ascending=False).plot(kind='bar', figsize=(14, 6), title='机场起飞到达延迟状况')
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plt.title('机场航班起飞延迟,到达延迟情况', {'fontproperties': font_prop})
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plt.show()
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# 机场航班起飞延迟的百分比
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d = data[['ORIGIN_STATE_ABR', 'DEP_DEL15']].dropna()
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departs = d['ORIGIN_STATE_ABR'].value_counts()
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pct_departure_delays = depart_delay_couots / departs
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d = data[['DEST_STATE_ABR', 'ARR_DEL15']].dropna()
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# 计算到达航班的数量
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arrives = d['DEST_STATE_ABR'].value_counts()
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# arrive_delay_couots 机场到达延迟航班数
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pct_arrive_delays = arrive_delay_couots / arrives
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# 将起飞延迟和到达延迟组合成 DataFrame,柱状图描述
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pct_delay_df = pd.DataFrame([pct_departure_delays, pct_arrive_delays]).T
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pct_delay_df.columns = ['起飞延迟比例', '到达延迟比例']
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# display(pct_departure_delays,pct_arrive_delays)
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pct_delay_df.sort_values('起飞延迟比例', ascending=False).plot(kind='bar', title='机场起飞到达延迟百分比', figsize=(14, 6))
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plt.title('机场起飞到达延迟百分比', {'fontproperties': font_prop})
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plt.show()
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