title: AttributeError: 'DataFrame' object has no attribute 'map'
body: <p>I wanted to convert the spark data frame to add using the code below:</p>
  
  <pre><code>from pyspark.mllib.clustering import KMeans
  spark_df = sqlContext.createDataFrame(pandas_df)
  rdd = spark_df.map(lambda data: Vectors.dense([float(c) for c in data]))
  model = KMeans.train(rdd, 2, maxIterations=10, runs=30, initializationMode="random")
  </code></pre>
  
  <p>The detailed error message is:</p>
  
  <pre><code>---------------------------------------------------------------------------
  AttributeError                            Traceback (most recent call last)
  &lt;ipython-input-11-a19a1763d3ac&gt; in &lt;module&gt;()
        1 from pyspark.mllib.clustering import KMeans
        2 spark_df = sqlContext.createDataFrame(pandas_df)
  ----&gt; 3 rdd = spark_df.map(lambda data: Vectors.dense([float(c) for c in data]))
        4 model = KMeans.train(rdd, 2, maxIterations=10, runs=30, initializationMode="random")
  
  /home/edamame/spark/spark-2.0.0-bin-hadoop2.6/python/pyspark/sql/dataframe.pyc in __getattr__(self, name)
      842         if name not in self.columns:
      843             raise AttributeError(
  --&gt; 844                 "'%s' object has no attribute '%s'" % (self.__class__.__name__, name))
      845         jc = self._jdf.apply(name)
      846         return Column(jc)
  
  AttributeError: 'DataFrame' object has no attribute 'map'
  </code></pre>
  
  <p>Does anyone know what I did wrong here? Thanks!</p>