>>>>> Liviu Andronic <landronim...@gmail.com>
>>>>> on Wed, 10 Aug 2011 11:46:55 +0200 writes:
> Hello On Wed, Aug 10, 2011 at 11:41 AM, Dimitris
> Rizopoulos <d.rizopou...@erasmusmc.nl> wrote:
>> One approach is the following:
>>
>> numVars <- sapply(iris, is.numeric) iris[numVars] <-
>> lapply(iris[numVars], round, digits = 2) head(iris)
>>
> That's interesting, but still doesn't do what I
> need. Since it's a read-only View() operation I would like
> to avoid at all cost modifying the original data
> frame. And since my data frames are relatively big, I
> would like to avoid generating unnecessary
> copies. Basically I would need round() to ignore objects
> that it knows it cannot handle.
> Any other ideas?
Well, as you say it's "View()" only, so why don't you just
"view" the result of
something like
print(<data>, digits = 2)
(it does correspond to signif(), rather than round(),
but I think that that's more sensible anyway).
Martin
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