On 17 May 2011 14:53, Artur Wroblewski <wrob...@pld-linux.org> wrote:
> R returns vector for pi number.
More generally, in R, you always work with vectors. So even if you give it
the expression "2", it treats it as a vector of length 1.
As for attribute access, robjects.r.pi already works for me. You can easily
say "r = robjects.r" if you want to save some typing.
The difference between robjects.r(...) and robjects.r[...] is that [...]
simply looks up a name, while (...) evaluates an expression. So
robjects.r("pi + 1")
works, but
robjects.r["pi + 1"]
throws a lookup error.
Thomas
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