[Rd] trivial typo in ?Matrix::sparse.model.matrix.Rd

[Martin Maechler]

>>>>> Ben Bolker 
>>>>>     on Mon, 20 Jul 2020 20:11:04 -0400 writes:

>   "form" -> "from". Diff against latest SVN:
> Index: sparse.model.matrix.Rd
> ===================================================================
> --- sparse.model.matrix.Rd    (revision 3336)
> +++ sparse.model.matrix.Rd    (working copy)
> @@ -4,7 +4,7 @@
>  \alias{fac2sparse}
>  \alias{fac2Sparse}
>  \description{Construct a sparse model or \dQuote{design} matrix,
> -  form a formula and data frame (\code{sparse.model.matrix}) or a single
> +  from a formula and data frame (\code{sparse.model.matrix}) or a single
>    factor (\code{fac2sparse}).

>    The \code{fac2[Ss]parse()} functions are utilities, also used

Thank you, Ben; corrected in my (not yet committed) development
version.

BTW, there will be another improvement there,
 deprecating  'giveCsparse = TRUE'
 and replacing it by 'repr = "C"'

the latter allowing all three kind of sparseMatrix formats
("C", "R", "T")  instead of just Csparse* and Tsparse*.

Best regards,
Martin