| as.big.data.table {big.data.table} | R Documentation |
Convert to big.data.table
as.big.data.table(x, ...)
## S3 method for class 'function'
as.big.data.table(x, rscl, partition.by, partitions,
parallel = TRUE, ..., .log = getOption("bigdatatable.log", FALSE))
## S3 method for class 'call'
as.big.data.table(x, rscl, partition.by, partitions,
parallel = TRUE, ..., .log = getOption("bigdatatable.log", FALSE))
## S3 method for class 'list'
as.big.data.table(x, partition.by, partitions, parallel = TRUE,
..., .log = getOption("bigdatatable.log", FALSE))
## S3 method for class 'data.table'
as.big.data.table(x, rscl, partition.by, partitions,
parallel = TRUE, ..., .log = getOption("bigdatatable.log", FALSE))
x |
object to cast into big.data.table, can be data.table, function, quoted call or a list. |
rscl |
list of Rserve connections, can be validated by 'is.rscl(rscl, silent=FALSE)'. |
partition.by |
character vector of column names to be used for partitioning, 'uniqueN' by those columns should be lower than number of nodes. |
partitions |
data.table of unique combinations of values in *partition.by* columns. |
parallel |
logical, see '?bdt.eval'. |
.log |
logical if *TRUE* then logging will be done using logR to postgres db. |
... |
arguments passed to methods. |
big.data.table object.
Supported 'x' data types are *data.table* (will be automatically spread across the nodes), *function* or quoted *call* will be evaluated on each node and assigned to 'x' variable, a *list* will struct big.data.table on already working set of nodes, all having 'x' data.tables.