[R] Extract data of special character

[Ivan Krylov]

On Fri, 15 Mar 2019 03:06:28 +0800
roslinazairimah zakaria <roslinaump using gmail.com> wrote:

> how many of ATTRIBUTE related to TRAITS.

The table() function can be used to count occurrences of each
combination of factor levels. Does extracting the two columns by
dd[,c('ATTRIBUTE','TRAIT')] and passing the result to table() help?

-- 
Best regards,
Ivan