On 21/03/2013 18:20, Jonathan Greenberg wrote:
Given an arbitrary set of character vectors:
myvect1 <- c("abc","3","4")
myvect2 <- c("2","3","4")
I would like to develop a function that will convert any vectors that can
be PROPERLY converted to a numeric (myvect2) into a numeric, but leaves
character vectors which cannot be converted (myvect1) alone. Is there any
simple way to do this (e.g. some function that tests if a vector is
coercible to a numeric before doing so)?
--j
?type.convert
It does depend what you mean by 'properly'. Can
"123.456789012344567890123455" be converted 'properly'? [See the NEWS
for R-devel.]
--
Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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