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0001 # 0002 # Licensed to the Apache Software Foundation (ASF) under one or more 0003 # contributor license agreements. See the NOTICE file distributed with 0004 # this work for additional information regarding copyright ownership. 0005 # The ASF licenses this file to You under the Apache License, Version 2.0 0006 # (the "License"); you may not use this file except in compliance with 0007 # the License. You may obtain a copy of the License at 0008 # 0009 # http://www.apache.org/licenses/LICENSE-2.0 0010 # 0011 # Unless required by applicable law or agreed to in writing, software 0012 # distributed under the License is distributed on an "AS IS" BASIS, 0013 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 0014 # See the License for the specific language governing permissions and 0015 # limitations under the License. 0016 # 0017 0018 from __future__ import print_function 0019 0020 # $example on$ 0021 from pyspark.ml.feature import StringIndexer 0022 # $example off$ 0023 from pyspark.sql import SparkSession 0024 0025 if __name__ == "__main__": 0026 spark = SparkSession\ 0027 .builder\ 0028 .appName("StringIndexerExample")\ 0029 .getOrCreate() 0030 0031 # $example on$ 0032 df = spark.createDataFrame( 0033 [(0, "a"), (1, "b"), (2, "c"), (3, "a"), (4, "a"), (5, "c")], 0034 ["id", "category"]) 0035 0036 indexer = StringIndexer(inputCol="category", outputCol="categoryIndex") 0037 indexed = indexer.fit(df).transform(df) 0038 indexed.show() 0039 # $example off$ 0040 0041 spark.stop()
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