Create a nanoarrow_array_stream from a Polars object

Description

Usage

## S3 method for class 'RPolarsDataFrame'
as_nanoarrow_array_stream(x, ..., schema = NULL, compat_level = FALSE)

# S3 method for class 'RPolarsSeries'
as_nanoarrow_array_stream(x, ..., schema = NULL, compat_level = FALSE)

Arguments

`x`	A polars object
`…`	Ignored
`schema`	must stay at default value NULL
`compat_level`	Use a specific compatibility level when exporting Polars’ internal data structures. This can be: an integer indicating the compatibility version (currently only 0 for oldest and 1 for newest); a logical value with `TRUE` for the newest version and `FALSE` for the oldest version.

Examples

library("polars")


library(nanoarrow)

pl_df = as_polars_df(mtcars)$head(5)
pl_s = as_polars_series(letters[1:5])

as.data.frame(as_nanoarrow_array_stream(pl_df))

#>    mpg cyl disp  hp drat    wt  qsec vs am gear carb
#> 1 21.0   6  160 110 3.90 2.620 16.46  0  1    4    4
#> 2 21.0   6  160 110 3.90 2.875 17.02  0  1    4    4
#> 3 22.8   4  108  93 3.85 2.320 18.61  1  1    4    1
#> 4 21.4   6  258 110 3.08 3.215 19.44  1  0    3    1
#> 5 18.7   8  360 175 3.15 3.440 17.02  0  0    3    2

as.vector(as_nanoarrow_array_stream(pl_s))

#> [1] "a" "b" "c" "d" "e"