GitHub user olarayej opened a pull request:
https://github.com/apache/spark/pull/11569
Added histogram function
## What changes were proposed in this pull request?
Added method histogram() to compute the histogram of a Column
**Usage:**
# Create a DataFrame from the Irijjs dataset
irisDF <- createDataFrame(sqlContext, iris)
# Render a histogram for the Sepal_Length column
histogram(irisDF, "Sepal_Length", nbins=12)
Note: Usage will change once SPARK-9325 is figured out so that histogram()
only takes a Column as a parameter, as opposed to a DataFrame and a name
## How was this patch tested?
All unit tests pass. I added specific unit cases for different scenarios.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/olarayej/spark SPARK-13734
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/11569.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 #11569
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commit efc2f6634b54cd91e4946d4d4e04be769769f4ad
Author: Oscar D. Lara Yejas <[email protected]>
Date: 2016-03-08T00:19:07Z
Added histogram function
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