print_options: Set global printing method for data.table

Description

This function allow user to define how data.table is printed.

Usage

print_options(
  topn = 5,
  nrows = 100,
  class = TRUE,
  row.names = TRUE,
  col.names = "auto",
  print.keys = TRUE,
  trunc.cols = FALSE
)

Value

None. This function is used for its side effect of changing options.

Arguments

topn: The number of rows to be printed from the beginning and end of tables with more than nrow rows.
nrows: The number of rows which will be printed before truncation is enforced.
class: If TRUE, the resulting output will include above each column its storage class (or a self-evident abbreviation thereof).
row.names: If TRUE, row indices will be printed.
col.names: One of three flavours for controlling the display of column names in output. "auto" includes column names above the data, as well as below the table if nrow(x) > 20. "top" excludes this lower register when applicable, and "none" suppresses column names altogether (as well as column classes if class = TRUE.
print.keys: If TRUE, any key currently assigned to x will be printed prior to the preview of the data.
trunc.cols: If TRUE, only the columns that can be printed in the console without wrapping the columns to new lines will be printed (similar to tibbles).

Details

Notice that tidyfst has a slightly different printing default for data.table, which is it always prints the keys and variable class (not like data.table).

Examples

Run this code


iris %>% as.data.table()
print_options(topn = 3,trunc.cols = TRUE)
iris %>% as.data.table()

# set all settings to default in tidyfst
print_options()
iris %>% as.data.table()