Set or get SAS storage lengths

When called with named arguments, sets the sas.length attribute on the specified columns. When called without arguments, returns current lengths. If no explicit length is set, write_xpt() auto-computes lengths from the data (8 for numeric, max byte width for character).

Usage

set_length(data, ...)

Arguments

data

A data frame.

...

Named arguments where names are column names and values are integer storage lengths.

Value

When setting: the data frame with updated length attributes. When getting: a named integer vector of lengths.

See also

Other metadata: get_metadata(), set_dataset_label(), set_format(), set_label()

Examples

df <- data.frame(STUDYID = "S1", AGE = 65, stringsAsFactors = FALSE)
df <- set_length(df, STUDYID = 20L, AGE = 8L)
set_length(df)
#> STUDYID     AGE 
#>      20       8