[R] quote supression

[Peter Dalgaard BSA]

"Jeremy Z Butler" <jerrytheshrub at hotmail.com> writes:

> To creat a series of plots I've constructed the following, however
> this doesn't work because the colnames being feed into n are embraced
> by quotes which is stuffing up the plotting function. Is there a way
> to suppress to quotes? coercion in to a different format??
> 
> for (n in colnames(tt[7:36]))
> {
> par(ask=T)
> attach(tt)
> plot(july~n)
> ...
> }

[You're adding tt to the search list 30 times that way. I don't think
you want that... Also, what is tt? If a matrix then you'd probably
need tt[,7:36] ]

This is difficult to do cleanly. One reasonable way might be

for (i in 7:36)
        plot(july~tt[,i],xlab=colnames(tt)[i])

If you insist on following your original strategy you end up with
something like

        eval(substitute(plot(july~n),list(n=as.name(n))))

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907