Re: [R] time series from timed data

From: Sam Steingold <sds_at_gnu.org>
Date: Tue, 22 Mar 2011 18:49:22 -0400

Hi,
thanks for your reply.

> * Gabor Grothendieck <ttebguraqvrpx_at_tznvy.pbz> [2011-03-18 17:51:03 -0400]:
> On Fri, Mar 18, 2011 at 2:19 PM, Sam Steingold <sds@gnu.org> wrote:
>
> 2. An alternative that won't generate a warning message but involves a
> double read is:
>
> library(zoo)
> toPOSIXct <- function(x) as.POSIXct(trunc(as.POSIXct(x), "sec"))
> z <- read.zoo(textConnection(Lines), FUN = toPOSIXct, sep =
> ",", aggregate = mean)
> zl <- read.zoo(textConnection(Lines), FUN = toPOSIXct, sep = ",",
> aggregate = length)
> cbind(z, count = zl[,1])
>
> In all cases replace textConnection(Lines) with the "myfile.csv" or whatever.

is it possible to avoid both double read and warning? I tried to pass a data frame to read.zoo and got

Error in function (x) :
  unused argument(s) (sec = c(24.7736890316010, 27.7369959354401, 27.7369959354401, 28.8604519367218, 29.1779129505157, 30.0554060935974, 30.30619597435, 30.3425068855286, 30.5043799877167, 30.5294759273529, 31.567528963089, 31.5929388999939, 31.6186139583588, 31.670196056366, 31.7729399204254, 31.873172044754, 31.9950220584869, 32.4294190406799, 32.5335929393768, 32.8650600910187, 32.8651750087738, 32.8945369720459, 32.8971579074860, 32.8987069129944, 33.6954081058502, 33.7132570743561, 33.9529790878296, 33.9542989730835,

  apparently in the call to toPOSIXct

-- 
Sam Steingold (http://sds.podval.org/) on CentOS release 5.5 (Final) X
http://www.PetitionOnline.com/tap12009/ http://truepeace.org
http://memri.org http://mideasttruth.com http://pmw.org.il
Any programming language is at its best before it is implemented and used.

______________________________________________
R-help_at_r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Received on Tue 22 Mar 2011 - 23:06:35 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Tue 22 Mar 2011 - 23:20:23 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive