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Add z.show() feature to docs

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I was unaware of this really nice feature, which led me to writing my own "zeppelin_show" function.
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TwUxTLi51Nus 2017-07-12 23:31:35 +02:00 committed by GitHub
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docs/interpreter/spark.md
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@ -297,6 +297,14 @@ z.load("groupId:artifactId:version").local()
## ZeppelinContext
Zeppelin automatically injects `ZeppelinContext` as variable `z` in your Scala/Python environment. `ZeppelinContext` provides some additional functions and utilities.
### Exploring Spark DataFrames
`ZeppelinContext` provides a `show` method, which, using Zeppelin's `table` feature, can be used to nicely display a Spark DataFrame:
```
df = spark.read.csv('/path/to/csv')
z.show(df)
```
### Object Exchange
`ZeppelinContext` extends map and it's shared between Scala and Python environment.
So you can put some objects from Scala and read it from Python, vice versa.