However I have noticed a strange thing. Placing of "tz = """ matters here:
> head(read.zoo("f:/dat1.txt", sep = ",", header = TRUE, format = "%m/%d/%Y > %H:%M:%S"), tz = "") data.open data.high data.low data.close 2010-10-15 73.7 73.7 73.7 73.7 2010-10-15 73.8 73.8 73.8 73.8 2010-10-15 73.8 73.8 73.8 73.8 2010-10-15 73.8 73.8 73.8 73.8 2010-10-15 73.8 73.8 73.8 73.8 2010-10-15 73.8 73.8 73.8 73.8 Warning messages: 1: In zoo(rval3, ix) : some methods for “zoo” objects do not work if the index entries in ‘order.by’ are not unique 2: In zoo(rval, x.index[i]) : some methods for “zoo” objects do not work if the index entries in ‘order.by’ are not unique > head(read.zoo("f:/dat1.txt", sep = ",", header = TRUE, tz = "", format = > "%m/%d/%Y %H:%M:%S")) data.open data.high data.low data.close 2010-10-15 09:00:24 74.35 74.35 74.35 74.35 2010-10-15 09:01:15 74.30 74.30 74.30 74.30 2010-10-15 09:01:21 74.35 74.35 74.35 74.35 2010-10-15 09:01:27 74.20 74.20 74.20 74.20 2010-10-15 09:01:30 74.25 74.25 74.25 74.25 2010-10-15 09:01:36 74.25 74.25 74.25 74.25 Warning message: In zoo(rval3, ix) : some methods for “zoo” objects do not work if the index entries in ‘order.by’ are not unique Is it a bug or a rule that for any function, placing of it's arguments matter? Thanks, --- On Sat, 10/16/10, Megh Dal <megh700...@yahoo.com> wrote: > From: Megh Dal <megh700...@yahoo.com> > Subject: Re: [R] Problem with merging two zoo objects > To: "Gabor Grothendieck" <ggrothendi...@gmail.com> > Cc: r-help@r-project.org > Date: Saturday, October 16, 2010, 7:20 AM > I dont know whether I am missing > something or not: > > > head(read.zoo(file="f:/dat1.txt", header=T, sep=",", > format = "%m/%d/%Y %H:%M:%S"), tz="GMT") > data.open > data.high data.low data.close > 2010-10-15 73.7 > 73.7 73.7 > 73.7 > 2010-10-15 73.8 > 73.8 73.8 > 73.8 > 2010-10-15 73.8 > 73.8 73.8 > 73.8 > 2010-10-15 73.8 > 73.8 73.8 > 73.8 > 2010-10-15 73.8 > 73.8 73.8 > 73.8 > 2010-10-15 73.8 > 73.8 73.8 > 73.8 > Warning messages: > 1: In zoo(rval3, ix) : > some methods for “zoo” objects do not work if > the index entries in ‘order.by’ are not unique > 2: In zoo(rval, x.index[i]) : > some methods for “zoo” objects do not work if > the index entries in ‘order.by’ are not unique > > head(read.zoo(file="f:/dat1.txt", header=T, sep=",", > format = "%m/%d/%Y %H:%M:%S")) > data.open > data.high data.low data.close > 2010-10-15 73.7 > 73.7 73.7 > 73.7 > 2010-10-15 73.8 > 73.8 73.8 > 73.8 > 2010-10-15 73.8 > 73.8 73.8 > 73.8 > 2010-10-15 73.8 > 73.8 73.8 > 73.8 > 2010-10-15 73.8 > 73.8 73.8 > 73.8 > 2010-10-15 73.8 > 73.8 73.8 > 73.8 > Warning messages: > 1: In zoo(rval3, ix) : > some methods for “zoo” objects do not work if > the index entries in ‘order.by’ are not unique > 2: In zoo(rval, x.index[i]) : > some methods for “zoo” objects do not work if > the index entries in ‘order.by’ are not unique > > In either case, I am missing the "time" component. Where I > am going wrong? > > Thanks, > > > --- On Sat, 10/16/10, Gabor Grothendieck <ggrothendi...@gmail.com> > wrote: > > > From: Gabor Grothendieck <ggrothendi...@gmail.com> > > Subject: Re: [R] Problem with merging two zoo objects > > To: "Megh" <megh700...@yahoo.com> > > Cc: r-help@r-project.org > > Date: Saturday, October 16, 2010, 2:33 AM > > On Fri, Oct 15, 2010 at 4:27 PM, Megh > > <megh700...@yahoo.com> > > wrote: > > > > > > Thanks Gabor for pointing to my old version. > However I > > got one more question > > > why the argument tz="" is sitting there? As you > are > > not passing any explicit > > > > It would otherwise assume "Date" class. > > > > > str(read.zoo(file="dal1.csv", header=TRUE, > sep=",", > > format = "%m/%d/%Y %H:%M:%S", aggregate = mean)) > > ‘zoo’ series from 2010-10-15 to 2010-10-15 > > Data: num [1, 1:4] 73.7 73.7 73.7 73.7 > > - attr(*, "dimnames")=List of 2 > > ..$ : chr "2010-10-15" > > ..$ : chr [1:4] "data.open" "data.high" "data.low" > > "data.close" > > Index: Class 'Date' num 14897 > > > <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< > > > > > > -- > > Statistics & Software Consulting > > GKX Group, GKX Associates Inc. > > tel: 1-877-GKX-GROUP > > email: ggrothendieck at gmail.com > > > > > > ______________________________________________ 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.