dtapply: Apply function and return a data.frame

In NMdata: Preparation, Checking and Post-Processing Data for PK/PD Modeling

Apply function and return a data.frame

Description

A convenience function that returns a data.frame with a column representing the input values and a column with results. This is still experimental and will not work for many input structures.

Usage

dtapply(
  X,
  FUN,
  value.names = NULL,
  element.name = "element",
  fill = TRUE,
  as.fun,
  ...
)

Arguments

X	Like for 'lapply()', an object to process (typically a vector or a list). Passed to 'lapply()'.
FUN	Function to run for each element in 'X'. Passed to 'lapply()'.
value.names	If supplied, setnames will be run on each element returned by lapply wit value.names as the 'new' argument.
element.name	What to call the column holding the values or the names of 'X'? Default is "element". What goes into this column depends on the class of 'X'. If 'X' is a character vector, it will be the values of 'X'. If 'X' is a list, it will be the names of the elements in the list.
fill	Fill resulting data with 'NA's in order to combine into a single 'data.frame'? Default is TRUE.
as.fun	The default is to return data as a data.frame. Pass a function in as.fun to convert to something else. If data.tables are wanted, use 'as.fun="data.table"'. The default can be configured using 'NMdataConf()'.
...	arguments passed to lapply

Details

Only functions that return vectors are currently supported. dtapply should support functions that return data.frames.

Value

a data.table

NMdata documentation built on Nov. 5, 2025, 5:43 p.m.