Re: [R] Aggregating 15 minute xts sequence to hourly

k like to you? Many thanks again, Costas ______ *Costas Vorlow <http://www.gravatar.com/avatar/49a9dee59073b1ed4a36440a06aeb81b> * *http://www.linkedin.com/in/costasvorlow <http://www.linkedin.com/in/costasvorlow>* *http://www.v

Re: [R] Aggregating 15 minute xts sequence to hourly

ur time stamp... ______ *Costas Vorlow <http://www.gravatar.com/avatar/49a9dee59073b1ed4a36440a06aeb81b> * *http://www.linkedin.com/in/costasvorlow <http://www.linkedin.com/in/costasvorlow>* *http://www.vorlow.com* <http://www.vorlow.com> ▇ ▅ █ ▅ ▇ ▂ ▃ ▁ ▁ ▅ ▃ ▅ ▅

[R] Aggregating 15 minute xts sequence to hourly

12:00 and so on) ? Many thanks in advance, Costas __________ *Costas Vorlow <http://www.gravatar.com/avatar/49a9dee59073b1ed4a36440a06aeb81b> * *http://www.linkedin.com/in/costasvorlow <http://www.linkedin.com/in/costasvorlow>* *http://www.vorlow.com* <http://www.vorlow.com&g

[R] Collapsing data.frame to its or xts

Hello, I have a data.frame of a time series sampled every 15 minutes. Also the data are in reverse order (recent to older). It looks like the following: Date 0:00 0:15 0:30 0:45 1:00 1:15 1:30 1:45 2:00 2:15 2:30 2:45 3:00 3:15 3:30 3:45 4:00 4:15 4:30 4:45 5:00 5:15 5:30 5:45 6:00 6:15 6:30 6:

[R] R command execution at specific time from within R

Hello, I am trying to write a code that executes an R command at specific time intervals. É want R to do that instead of the operating system. Any help/pointer extremely welcome. Thanks in advance, Costas [[alternative HTML version deleted]] ___

[R] hhmm time format, strptime and %k

Hello, I am having trouble with the conversion specifications as described in the strptime help page. > head(dat) Date Time Open HighLow Close UpDown Volume 1 11/19/2012 935 137.89 138.06 137.82 138.05 3202541 3013215 0 2 11/19/2012 940 138.04 138.40 138.02 138.

[R] RGoogleTrends vs Google

Anybody encountered the same problems? Best, Costas -- __________ *Costas Vorlow * *http://www.linkedin.com/in/costasvorlow* *http://www.vorlow.com* <http://www.vorlow.com> * * [[a

Re: [R] Vectorization instead of loops problem

ad no clue what the OP wanted. And it's > not English as a second language. I am a language ignoramus and speak > only English, so I am happy to tolerate poor grammar and vocabulary > from someone for whom English is only one of several languages in > which they can communicate. The p

Re: [R] Vectorization instead of loops problem

Thanks Uwe. What happens if these are zoo (or time series) sequences/dataframes? \ I think your solution would apply as well, no? Thanks again & best wishes, Costas 2011/12/4 Uwe Ligges > > > On 04.12.2011 16:18, Costas Vorlow wrote: > >> Hello, >> >> I

[R] Vectorization instead of loops problem

Hello, I am having problems vectorizing the following (i/o using a for/next/while loop): I have 2 sequences such as: x, y 1, 30 2, -40 0, 50 0, 25 1, -5 2, -10 1, 5 0, 40 etc etc The first sequence (x) takes integer numbers only: 0, 1, 2 The sequence y can be anything... I want to be able to

Re: [R] tkrplot Newbie

Jonathan Daily wrote: > According to documentation, tkrplot's fun parameter accepts a function > of no arguments. If you remove the arguments from your function, does > that kill the error message? > > On Fri, Jun 3, 2011 at 11:42 AM, Costas Vorlow > wrote: >> H

[R] tkrplot Newbie

Hello, I am trying to write a tcltk based program that plots/manipulates xts/xoo time series objects. I have the code I used from ## http://bioinf.wehi.edu.au/~wettenhall/RTclTkExamples/tkrplot.html : ## require(quantmod) require(tcltk) library(tkrplot) Sys.setenv(TZ="GMT") getSymbols("^GSPC",

[R] Fwd: open.exe Virus W32.ATRAPS

Hello, I am not sure if this is the correct mailing list to send this email... I was trying to install on windows XP latest R-2.12.2 and my unvirus program (Immunet 3.0) reports a virus at open.exe while this is unpacked: W32.ATRAPS Has anyone come across the same problem? Best, Costas