pyspark 计算各个区县 2024 年 每天的 最高气温,最低气温,平均气温
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from pyspark.sql.types import DecimalType
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from pyspark.sql import functions
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from client import spark_app
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from data.data import data_hour_hdfs, mysql_jdbc_uri, mysql_jdbc_prop
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def passed_rain_analyse():
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print("计算各个城市过去24小时累积雨量")
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app = spark_app("passed_rain_analyse")
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print("start")
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df = app.read.csv(data_hour_hdfs, header=True)
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df_rain = df.select(df['city_index'], df['city_name'], df['rain1h'].cast(DecimalType(scale=1))) \
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.filter(df['rain1h'] < 1000) # 筛选数据,去除无效数据
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df_rain_sum = df_rain.groupBy("city_index", "city_name") \
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.agg(functions.sum("rain1h").alias("rain24h")) \
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.sort(functions.desc("rain24h")) # 分组、求和、排序
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df_rain_sum.cache()
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df_rain_sum.coalesce(1).write.jdbc(mysql_jdbc_uri, "passed_rain_analyse", "ignore", mysql_jdbc_prop)
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print("各个城市过去24小时累积雨量计算完毕")
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return df_rain_sum.head(20)
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if __name__ == "__main__":
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passed_rain_analyse()
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spark/rain_24h_analyse.py
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spark/rain_24h_analyse.py
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from pyspark.sql.types import DecimalType
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from pyspark.sql import functions
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from client import spark_app
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from data.data import data_hour_hdfs, mysql_jdbc_uri, mysql_jdbc_prop
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def rain_24h_analyse():
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print("计算重庆市各个区县过去24小时累积雨量")
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app = spark_app("rain_24h_analyse")
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print("创建应用完成,开始读取数据")
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df = app.read.csv(data_hour_hdfs, header=True)
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print("读取数据完成,开始处理数据")
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# 取出数据
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df_rain_data = df.select(
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df['city_index'], df['city_name'], df['rain1h'].cast(DecimalType(scale=1))
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).filter(df['rain1h'] < 9999)
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# 分组、聚合、排序
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df_rain_sum_data = (df_rain_data.groupBy("city_index", "city_name")
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.agg(functions.sum("rain1h").alias("rain24h"))
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.sort(functions.desc("rain24h")))
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df_rain_sum_data.cache()
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print("处理完成,保存数据到数据库")
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df_rain_sum_data.coalesce(1).write.jdbc(mysql_jdbc_uri, "rain_24h_analyse", "ignore", mysql_jdbc_prop)
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print("各个城市过去24小时累积雨量计算完毕")
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return df_rain_sum_data.head(20)
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if __name__ == "__main__":
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rain_24h_analyse()
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spark/tem_2024_analyse.py
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spark/tem_2024_analyse.py
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from pyspark.sql.types import IntegerType
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from pyspark.sql import functions
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from client import spark_app
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from data.data import data_day_hdfs, mysql_jdbc_uri, mysql_jdbc_prop
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def tem_2024_analyse():
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print("计算重庆市各个区县 2024 年 每天的 最高气温,最低气温,平均气温")
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app = spark_app("tem_2024_analyse")
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print("创建应用完成,开始读取数据")
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df = app.read.csv(data_day_hdfs, header=True)
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print("读取数据完成,开始处理数据")
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# 取出数据
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df_rain_data = df.select(
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df['city'], df['date'], df['hmax'].cast(IntegerType()), df['hmin'].cast(IntegerType())
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)
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# 求平均
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df_rain_data = df_rain_data.withColumn("havg", (functions.col("hmax") + functions.col("hmin")) / 2)
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# 转换 'date' 列的日期格式
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df_rain_data = df_rain_data.withColumn(
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'date',
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functions.date_format(functions.from_unixtime(
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functions.unix_timestamp('date', 'yyyyMMdd')), 'yyyyMM').cast(IntegerType())
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)
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# 分组、聚合
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df_rain_data = (df_rain_data.groupBy("city", "date")
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.agg(functions.max("hmax").alias("hmax"),
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functions.min("hmin").alias("hmin"),
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functions.round(functions.avg("havg"), 2).alias("havg"))
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.sort("city", df_rain_data.date.desc()))
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df_rain_data.cache()
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print("处理完成,保存数据到数据库")
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df_rain_data.coalesce(1).write.jdbc(mysql_jdbc_uri, "tem_2024_analyse", "ignore", mysql_jdbc_prop)
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print("各个区县 2024 年 每天的 最高气温,最低气温,平均气温计算完毕")
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return df_rain_data.head(20)
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if __name__ == "__main__":
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tem_2024_analyse()
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