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spark:spark-introduction [2014/11/11 09:07]
straka 		spark:spark-introduction [2014/11/11 09:11]
straka
Line 63: Line 63:
  
 ===== K-Means Example ===== ===== K-Means Example =====
-An example implementing [[http://en.wikipedia.org/wiki/K-means_clustering|Standard iterative K-Means algorithm]] follows:+An example implementing [[http://en.wikipedia.org/wiki/K-means_clustering|Standard iterative K-Means algorithm]] follows. Try copying it to open Python shell. Note that this wiki is formating empty lines as lines with one space, which is confusing for ''pyspark'' used without ''IPYTHON=1'', so either use ''IPYTHON=1'' or copy the text paragraph-by-paragraph.
 <file python> <file python>
 import numpy as np import numpy as np
Line 71: Line 71:
  
 lines = sc.textFile("/net/projects/spark-example-data/points", sc.defaultParallelism) lines = sc.textFile("/net/projects/spark-example-data/points", sc.defaultParallelism)
-data = lines.map(lambda line: map(float, line.split())).cache()+data = lines.map(lambda line: np.array(map(float, line.split()))).cache()
  
 K = 50 K = 50

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