Remove Columns from a Data Frame

Usage

removeColumns(
  dframe,
  columns = NULL,
  columnsToRemove = NULL,
  pattern = NULL,
  drop = FALSE,
  dbg = FALSE
)

dframe: data frame,
columns: vector of column names giving the columns to remove
columnsToRemove: deprecated. Use argument columns instead.
pattern: regular expression matching the names of the columns to be removed. Will only be evaluated if no explicit column names are given in columns.
drop: if FALSE, a data frame is returned in any case, otherwise the result may be a vector if only one column remains
dbg: if TRUE (the default is FALSE), the deletion of columns is reported on the screen

dframe with columns given in columns being removed. User attributes of dframe are restored.