How to use matplotlib to plot sql-pyspark results
1 answer
Hi I found a solution for this. I converted sql dataframe to pandas dataframe and then I managed to plot graphs. below is a sample code. of
pyspark.sql import Row
from pyspark.sql import HiveContext
import pyspark
from IPython.display import display
import matplotlib
import matplotlib.pyplot as plt
%matplotlib inline
sc = pyspark.SparkContext()
sqlContext = HiveContext(sc)
test_list = [(1, 'hasan'),(2, 'nana'),(3, 'dad'),(4, 'mon')]
rdd = sc.parallelize(test_list)
people = rdd.map(lambda x: Row(id=int(x[0]), name=x[1]))
schemaPeople = sqlContext.createDataFrame(people)
# Register it as a temp table
sqlContext.registerDataFrameAsTable(schemaPeople, "test_table")
df1=sqlContext.sql("Select * from test_table")
pdf1=df1.toPandas()
pdf1.plot(kind='barh',x='name',y='id',colormap='winter_r')
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