record_batch {arrow}

Create a RecordBatch

Description

Create a RecordBatch

Usage

record_batch(..., schema = NULL)

Arguments

...

A data.frame or a named set of Arrays or vectors. If given a mixture of data.frames and vectors, the inputs will be autospliced together (see examples). Alternatively, you can provide a single Arrow IPC InputStream, Message, Buffer, or R raw object containing a Buffer.

schema

a Schema, or NULL (the default) to infer the schema from the data in .... When providing an Arrow IPC buffer, schema is required.

Examples

batch <- record_batch(name = rownames(mtcars), mtcars)
dim(batch)
dim(head(batch))
names(batch)
batch$mpg
batch[["cyl"]]
as.data.frame(batch[4:8, c("gear", "hp", "wt")])