Strip surrounding quote characters from data.frame column names

Pharmpy rejects column names that are not valid Python identifiers, and NONMEM misinterprets CSV headers that start with a quote character. This helper removes a single pair of matching surrounding single or double quotes from each column name.

Usage

unquote_column_names(data)

Arguments

data

data.frame (or NULL / non-data.frame, returned unchanged)

Value

data.frame with sanitised column names, or the input unchanged