GitHub user mengxr opened a pull request:

    https://github.com/apache/spark/pull/6556

    [SPARK-7584] [MLLIB] User guide for VectorAssembler

    This PR adds a section in the user guide for `VectorAssembler` with code 
examples in Python/Java/Scala. It also adds a unit test in Java.
    
    @jkbradley 

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/mengxr/spark SPARK-7584

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/spark/pull/6556.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #6556
    
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commit e39994229700695755d1846f45772a38606887f1
Author: Xiangrui Meng <[email protected]>
Date:   2015-06-01T07:21:16Z

    scala/python example code

commit ce61ca070d01a21c78d020a577b4c0ee1bb2c918
Author: Xiangrui Meng <[email protected]>
Date:   2015-06-01T16:44:58Z

    add Java unit test for VectorAssembler

commit fd36292573e46124551673f0c5a509fd019d3b3f
Author: Xiangrui Meng <[email protected]>
Date:   2015-06-01T18:54:30Z

    update Java unit test

commit 0cd47f38b4b23a54c86bdbdd283845f6cfaa071a
Author: Xiangrui Meng <[email protected]>
Date:   2015-06-01T19:44:30Z

    update user guide

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