cat in R behaves similarly to cat in unix-alikes, sends text to a stdout.
Usually, that stdout would be a file, but usually in R it is the R Console.
I think it might also help to note the difference between cat and print:
x <- "test\n"
cat(x)
print(x)
produces
> cat(x)
test
> print(x)
[1] "test\n"
With that said, wrap each expressions in cat or print depending on which
you want. Also, I would probably add a tryCatch with argument finally as {
sink()
}
which will guarantee the file connection is severed, even if an error is
raised. Hope this helps
On Tue, Nov 2, 2021, 15:52 Rich Shepard <rshep...@appl-ecosys.com> wrote:
> On Tue, 2 Nov 2021, Bert Gunter wrote:
>
> > What do you think these 2 lines are doing?
> > cat ('corvalis discharge summary\n')
> > print(cat)
>
> Bert,
>
> If I used them in linux cat would display the file (as do more and less)
> and
> print() would be replaced with lpr
>
> > Please consult ?cat . You might also spend a bit of (more?) time with an
> R
> > tutorial or two as you seem confused about how assignment (<-) works. Or
> > maybe I'm confused about what is confusing you....
>
> Having never before needed to use cat in R, and not seeing it explained in
> the one sink() web page, I didn't think to look at the help page.
>
> Now, using cat and not print line-by-line the first set of commands work,
> but not the second.
>
> More reading coming up.
>
> Rich
>
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