expandAllInconsistentFactorLevels: expandAllInconsistentFactorLevels
In bgctw/dplyrUtil: Utilities for using dplyr

Description Usage Arguments Details Value Author(s) Examples

expand a factor variables in all dataset to encompass levels of all sets

1 2	expandAllInconsistentFactorLevels(..., .noWarningCols = character(0), .omitWarning = FALSE)

`...`	list of data.frames or several data.frames separated by comma
`.noWarningCols`	string vector: do not warn for the these columns
`.omitWarning`

If no data.frame is provided, its returns an empty list.

Instead of providing several arguments, one can provide a a single list of data.frames

datasets with updated factor columns

Thomas Wutzler

if (exists("expandAllInconsistentFactorLevels")) {
  df1 <- data.frame(f = factor(c("D","D","C")))
  df2 <- data.frame(f = factor(c("C","C","A"))
                    , desc = c("forC1","forC2","forA1"))
  if (requireNamespace("dplyr"))
    dplyr::bind_rows(expandAllInconsistentFactorLevels(df1,df2))
  left_joinFactors(df1,df2)
}