[SPARK-11551][DOC] Replace example code in ml-features.md using include_example

PR on behalf of somideshmukh, thanks!

Author: Xusen Yin <yinxusen@gmail.com>
Author: somideshmukh <somilde@us.ibm.com>

Closes #10219 from yinxusen/SPARK-11551.

1 files changed, 39 insertions, 0 deletions

diff --git a/examples/src/main/python/ml/string_indexer_example.py b/examples/src/main/python/ml/string_indexer_example.py
new file mode 100644
index 0000000000..58a8cb5d56
--- /dev/null
+++ b/examples/src/main/python/ml/string_indexer_example.py
@@ -0,0 +1,39 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+from __future__ import print_function
+
+from pyspark import SparkContext
+from pyspark.sql import SQLContext
+# $example on$
+from pyspark.ml.feature import StringIndexer
+# $example off$
+
+if __name__ == "__main__":
+    sc = SparkContext(appName="StringIndexerExample")
+    sqlContext = SQLContext(sc)
+
+    # $example on$
+    df = sqlContext.createDataFrame(
+        [(0, "a"), (1, "b"), (2, "c"), (3, "a"), (4, "a"), (5, "c")],
+        ["id", "category"])
+    indexer = StringIndexer(inputCol="category", outputCol="categoryIndex")
+    indexed = indexer.fit(df).transform(df)
+    indexed.show()
+    # $example off$
+
+    sc.stop()