Inspect column headers of a NONMEM data file

Description

Reads only the header row of a NONMEM-format CSV file and prints the column names grouped into required NONMEM columns, optional NONMEM columns, and covariates / user-defined columns. Only the first line is read, so this is fast even on large datasets.

Usage

ferx_columns(data)

Arguments

  • data: One of:
  • A character string path to a NONMEM CSV file.
  • A ferx_fit object – uses fit$data_path.
  • The list returned by [ferx_example](ferx_example.qmd) – uses x$data.

Seealso

Other utilities: [ferx_example](ferx_example.qmd)(), [ferx_load_fit](ferx_load_fit.qmd)(), [ferx_save_fit](ferx_save_fit.qmd)()

Concept

utilities

Value

A character vector of column names, returned invisibly.

Examples

ex <- ferx_example("warfarin")
ferx_columns(ex)        # pass the ferx_example() list directly
ferx_columns(ex$data)   # or pass the path


fit <- ferx_fit(ex$model, ex$data)
ferx_columns(fit)       # inspect the data used for a fit