[SPARK-6806] [SPARKR] [DOCS] Fill in SparkR examples in programming g…

…uide sqlCtx -> sqlContext You can check the docs by: ``` $ cd docs $ SKIP_SCALADOC=1 jekyll serve ``` cc shivaram Author: Davies Liu <[email protected]> Closes apache#5442 from davies/r_docs and squashes the following commits: 7a12ec6 [Davies Liu] remove rdd in R docs 8496b26 [Davies Liu] remove the docs related to RDD e23b9d6 [Davies Liu] delete R docs for RDD API 222e4ff [Davies Liu] Merge branch 'master' into r_docs 89684ce [Davies Liu] Merge branch 'r_docs' of github.com:davies/spark into r_docs f0a10e1 [Davies Liu] address comments from @shivaram f61de71 [Davies Liu] Update pairRDD.R 3ef7cf3 [Davies Liu] use + instead of function(a,b) a+b 2f10a77 [Davies Liu] address comments from @cafreeman 9c2a062 [Davies Liu] mention R api together with Python API 23f751a [Davies Liu] Fill in SparkR examples in programming guide
yiheng · May 23, 2015 · 7af3818 · 7af3818
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diff --git a/R/README.md b/R/README.md
@@ -52,7 +52,7 @@ The SparkR documentation (Rd files and HTML files) are not a part of the source
 SparkR comes with several sample programs in the `examples/src/main/r` directory.
 To run one of them, use `./bin/sparkR <filename> <args>`. For example:
 
-    ./bin/sparkR examples/src/main/r/pi.R local[2]
+    ./bin/sparkR examples/src/main/r/dataframe.R
 
 You can also run the unit-tests for SparkR by running (you need to install the [testthat](http://cran.r-project.org/web/packages/testthat/index.html) package first):
 
@@ -63,5 +63,5 @@ You can also run the unit-tests for SparkR by running (you need to install the [
 The `./bin/spark-submit` and `./bin/sparkR` can also be used to submit jobs to YARN clusters. You will need to set YARN conf dir before doing so. For example on CDH you can run
 ```
 export YARN_CONF_DIR=/etc/hadoop/conf
-./bin/spark-submit --master yarn examples/src/main/r/pi.R 4
+./bin/spark-submit --master yarn examples/src/main/r/dataframe.R
 ```