[R] How to speed up grouping time series, help please

Gabor Grothendieck ggrothendieck at gmail.com
Mon Apr 4 17:38:07 CEST 2011

On Mon, Apr 4, 2011 at 11:20 AM, Den Alpin <den.alpin at gmail.com> wrote:
> I did some tests on Your and Gabor solutions, below my findings:
> - Your solution is fast as my solution in xts (below) but MUCH MORE
> READABLE, in particular I think your test should take into account xts
> creation from the data.frame (see below);
> - Gabor's solution with read.zoo is fast as xts but give an xts object
> that has some problems with time zones.

read.zoo gives a zoo object, not an xts object.  If you want an xts
object  try as.xts(z). If you were expecting an xts object that may be
the source of your other problems.

Statistics & Software Consulting
GKX Group, GKX Associates Inc.
tel: 1-877-GKX-GROUP
email: ggrothendieck at gmail.com

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