numdfr: Constructor for 'numdfr' class
In NumDfr: Provide a performant alternative to data.frame wrt factors

Description Usage Arguments Details Value Author(s) Examples

Turna data.frame into a numdfr

1	numdfr(dfr)

dfr

data.frame to coerce

Preserves as much of the information as possible from the data.frame into the numdfr. Order of factors and some other details may be lost in the process.

returns an object of class numdfr. Althoug you are not supposed to use this directly, this is a list containing two items:

`mat`	Numerical matrix representation of the data
`lvls`	list with for each column a character vector of the levels (length zero if the column wasn't a factor)

Nick Sabbe