alt Hacker News>a dataframe is a tuple (A, R, C, D): an array of data A, row labels R, column labels C, and a vector of column domains D.
What is 'a vector of column domains D'? A description of how the data A maps to columns?
>a dataframe is a tuple (A, R, C, D): an array of data A, row labels R, column labels C, and a vector of column domains D.
What is 'a vector of column domains D'? A description of how the data A maps to columns?
I think "domain" here is like the datatype