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Scale data from dataframe obtained with pyspark



2019 Community Moderator ElectionHow to sort a dataframe by multiple column(s)?Selecting multiple columns in a pandas dataframeAdding new column to existing DataFrame in Python pandasDelete column from pandas DataFrame by column nameHow to iterate over rows in a DataFrame in Pandas?Select rows from a DataFrame based on values in a column in pandasGet list from pandas DataFrame column headersWhat is the Spark DataFrame method `toPandas` actually doing?How to change dataframe column names in pyspark?pyspark multidimensional scaling










1















I'm trying to scale some data from a csv file. I'm doing this with pyspark to obtain the dataframe and sklearn for the scale part. Here is the code:



from sklearn import preprocessing
import numpy as np
import pyspark

from pysparl.sql import SparkSession

spark = SparkSession.builder.getOrCreate()

df = spark.read.option('header','true').csv('flights,csv')
X_scaled = preprocessing.scale(df)


If I make the dataframe with pandas the scale part doesn't have any problems, but with spark I get this error:



ValueError: setting an array element with a sequence.


So I'm guessing that the element types are different between pandas and pyspark, but how can I work with pyspark to do the scale?










share|improve this question


























    1















    I'm trying to scale some data from a csv file. I'm doing this with pyspark to obtain the dataframe and sklearn for the scale part. Here is the code:



    from sklearn import preprocessing
    import numpy as np
    import pyspark

    from pysparl.sql import SparkSession

    spark = SparkSession.builder.getOrCreate()

    df = spark.read.option('header','true').csv('flights,csv')
    X_scaled = preprocessing.scale(df)


    If I make the dataframe with pandas the scale part doesn't have any problems, but with spark I get this error:



    ValueError: setting an array element with a sequence.


    So I'm guessing that the element types are different between pandas and pyspark, but how can I work with pyspark to do the scale?










    share|improve this question
























      1












      1








      1








      I'm trying to scale some data from a csv file. I'm doing this with pyspark to obtain the dataframe and sklearn for the scale part. Here is the code:



      from sklearn import preprocessing
      import numpy as np
      import pyspark

      from pysparl.sql import SparkSession

      spark = SparkSession.builder.getOrCreate()

      df = spark.read.option('header','true').csv('flights,csv')
      X_scaled = preprocessing.scale(df)


      If I make the dataframe with pandas the scale part doesn't have any problems, but with spark I get this error:



      ValueError: setting an array element with a sequence.


      So I'm guessing that the element types are different between pandas and pyspark, but how can I work with pyspark to do the scale?










      share|improve this question














      I'm trying to scale some data from a csv file. I'm doing this with pyspark to obtain the dataframe and sklearn for the scale part. Here is the code:



      from sklearn import preprocessing
      import numpy as np
      import pyspark

      from pysparl.sql import SparkSession

      spark = SparkSession.builder.getOrCreate()

      df = spark.read.option('header','true').csv('flights,csv')
      X_scaled = preprocessing.scale(df)


      If I make the dataframe with pandas the scale part doesn't have any problems, but with spark I get this error:



      ValueError: setting an array element with a sequence.


      So I'm guessing that the element types are different between pandas and pyspark, but how can I work with pyspark to do the scale?







      python pandas apache-spark dataframe pyspark






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Mar 6 at 23:00









      jdonlucasjdonlucas

      163




      163






















          1 Answer
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          0














          sklearn works with pandas dataframe. So you have to convert spark dataframe to pandas dataframe.



          X_scaled = preprocessing.scale(df.toPandas())






          share|improve this answer






















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            1 Answer
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            0














            sklearn works with pandas dataframe. So you have to convert spark dataframe to pandas dataframe.



            X_scaled = preprocessing.scale(df.toPandas())






            share|improve this answer



























              0














              sklearn works with pandas dataframe. So you have to convert spark dataframe to pandas dataframe.



              X_scaled = preprocessing.scale(df.toPandas())






              share|improve this answer

























                0












                0








                0







                sklearn works with pandas dataframe. So you have to convert spark dataframe to pandas dataframe.



                X_scaled = preprocessing.scale(df.toPandas())






                share|improve this answer













                sklearn works with pandas dataframe. So you have to convert spark dataframe to pandas dataframe.



                X_scaled = preprocessing.scale(df.toPandas())







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 2 days ago









                Ranga VureRanga Vure

                814




                814





























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