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| author | Oscar D. Lara Yejas <odlaraye@oscars-mbp.usca.ibm.com> | 2016-04-26 15:34:30 -0700 |
|---|---|---|
| committer | Shivaram Venkataraman <shivaram@cs.berkeley.edu> | 2016-04-26 15:34:30 -0700 |
| commit | 0c99c23b7d9f0c3538cd2b062d551411712a2bcc (patch) | |
| tree | fc7d7cc02559756f50b3dd4a5f262e5aa822412e /mllib-local | |
| parent | 75879ac3c07f3b1a708f4392429335feb06f271b (diff) | |
| download | spark-0c99c23b7d9f0c3538cd2b062d551411712a2bcc.tar.gz spark-0c99c23b7d9f0c3538cd2b062d551411712a2bcc.tar.bz2 spark-0c99c23b7d9f0c3538cd2b062d551411712a2bcc.zip | |
[SPARK-13734][SPARKR] 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 Iris 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.
Author: Oscar D. Lara Yejas <odlaraye@oscars-mbp.usca.ibm.com>
Author: Oscar D. Lara Yejas <odlaraye@oscars-mbp.attlocal.net>
Closes #11569 from olarayej/SPARK-13734.
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