R: showDF

showDF {SparkR}

R Documentation

showDF

Description

Print the first numRows rows of a SparkDataFrame

Usage

showDF(x, ...)

## S4 method for signature 'SparkDataFrame'
showDF(x, numRows = 20, truncate = TRUE,
  vertical = FALSE)

Arguments

`x`	a SparkDataFrame.
`...`	further arguments to be passed to or from other methods.
`numRows`	the number of rows to print. Defaults to 20.
`truncate`	whether truncate long strings. If `TRUE`, strings more than 20 characters will be truncated. However, if set greater than zero, truncates strings longer than `truncate` characters and all cells will be aligned right.
`vertical`	whether print output rows vertically (one line per column value).

Note

showDF since 1.4.0

See Also

Other SparkDataFrame functions: SparkDataFrame-class, agg, alias, arrange, as.data.frame, attach,SparkDataFrame-method, broadcast, cache, checkpoint, coalesce, collect, colnames, coltypes, createOrReplaceTempView, crossJoin, cube, dapplyCollect, dapply, describe, dim, distinct, dropDuplicates, dropna, drop, dtypes, exceptAll, except, explain, filter, first, gapplyCollect, gapply, getNumPartitions, group_by, head, hint, histogram, insertInto, intersectAll, intersect, isLocal, isStreaming, join, limit, localCheckpoint, merge, mutate, ncol, nrow, persist, printSchema, randomSplit, rbind, rename, repartitionByRange, repartition, rollup, sample, saveAsTable, schema, selectExpr, select, show, storageLevel, str, subset, summary, take, toJSON, unionAll, unionByName, union, unpersist, withColumn, withWatermark, with, write.df, write.jdbc, write.json, write.orc, write.parquet, write.stream, write.text

Examples

## Not run: 
##D sparkR.session()
##D path <- "path/to/file.json"
##D df <- read.json(path)
##D showDF(df)
## End(Not run)

[Package SparkR version 3.0.0 Index]