Hi, thanks for your reply. > * Gabor Grothendieck <ttebguraqv...@tznvy.pbz> [2011-03-18 17:51:03 -0400]: > On Fri, Mar 18, 2011 at 2:19 PM, Sam Steingold <s...@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@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.