Excluding all missing values with dcast ("reshape2" package)

Thanks for the response. The drop option of dcast was the first thing I
tried. Sorry for the lack of reproducibility, but my data set is large, I
couldn't find anything in the package examples, and I had hoped the
modification would be straightforward. Using dcast was my first choice
because it returns a data frame. I was successful using xtabs; there was
just the extra step of converting the returned table to a data frame.
Thanks again!

-M.L.

This is not a reproducible example ;)

anyways, dcast has an attribute:
drop
should missing combinations dropped or kept?

does that not do what you want?

Hello--I'm doing a simple crosstab using dcast:

rawfreq <- dcast(nh11brfs, race3~CHCCOPD, length)

with the results

              race3 Yes   No NA
1 White non-Hispanic 446 5473 21
2 Other non-Hispanic  29  211  0
3           Hispanic   6   81  1
4               <NA>  10   83  1

How would I modify this call to exclude all missing values; that is, to
obtain

              race3 Yes   No
1 White non-Hispanic 446 5473
2 Other non-Hispanic  29  211
3           Hispanic   6   81

Apologies if this has come up before, and thanks.

-M.L.