| last {SparkR} | R Documentation |
Aggregate function: returns the last value in a group.
last(x, ...) ## S4 method for signature 'characterOrColumn' last(x, na.rm = FALSE)
x |
column to compute on. |
... |
further arguments to be passed to or from other methods. |
na.rm |
a logical value indicating whether NA values should be stripped before the computation proceeds. |
The function by default returns the last values it sees. It will return the last non-missing value it sees when na.rm is set to true. If all values are missing, then NA is returned. Note: the function is non-deterministic because its results depends on order of rows which may be non-deterministic after a shuffle.
last since 1.4.0
Other aggregate functions:
avg(),
column_aggregate_functions,
corr(),
count(),
cov(),
first()
## Not run:
##D last(df$c)
##D last(df$c, TRUE)
## End(Not run)