| head,DataFrame-method {SparkR} | R Documentation |
Return the first NUM rows of a DataFrame as a data.frame. If NUM is NULL, then head() returns the first 6 rows in keeping with the current data.frame convention in R.
## S4 method for signature 'DataFrame' head(x, num = 6L)
x |
A SparkSQL DataFrame |
num |
The number of rows to return. Default is 6. |
A data.frame
## Not run:
##D sc <- sparkR.init()
##D sqlContext <- sparkRSQL.init(sc)
##D path <- "path/to/file.json"
##D df <- jsonFile(sqlContext, path)
##D head(df)
## End(Not run)