Hi,

Is there a way to specify the last element of a vector, similar to "end" in
MATLAB?

  v[end]

would be MATLAB for

  v(length(v))

in R.

While `v(length(v))' does yield the last element, that approach fails in the
following,

  rep(v, each=2)[-c(1,length(v))]

which is meant to duplicate all elements of `v' except for the first and
last.  (I.e., if `v <- 1:4', then we want '1 2 2 3 3 4'.)

So the question is, is there a better way specify the last element of a
vector?  If not, is there a better way to duplicate all elements of a vector
except for the first and last?  (I know you can achieve this using two
lines, but I'm writing because I want to do it using one.)

Alan

-- 
Alan Lue
Master of Financial Engineering
UCLA Anderson School of Management

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