Add attribute to existing items.
Usage
item_migrate(items, name, type, fill = NA)
Arguments
- items
a data.frame of the items.
- name
a character string of the attribute name.
- type
a character string of the attribute type.
- fill
the value (default = NA) to be used to fill the existing rows (see details).
Value
The updated items data.frame.
Details
fill will be coerced to the class name provided in type.
If a vector is given as input for fill, it will be used to feed the created column.
Make sure the vector length is same as the number of rows, otherwise an error will be raised by R.
Examples
if (FALSE) { # \dontrun{
item_migrate(items = myitems, name = "comment", type = "character", fill = "none")
} # }