search for: risk2009

Dear all, I am looking at the R-help entry below: http://finzi.psych.upenn.edu/R/Rhelp02/archive/26640.html I have a more complicatedt problem. I have a zoo time series frame with 100+ sequences. I want to cycle through them back and forth and compare them to the 1st column at any time. I need also a button to click when I need the viewed-selected sequence (that is being compared to the

...or last day of month if less > nth.of.month<- function(date, n) { > ym<- as.yearmon(date) > pmin(as.Date(ym) + n - 1, as.Date(ym, frac = 1)) > } > > ag<- aggregate(DJd, nth.of.month(time(DJd), 31), tail, 1) > > > > On Fri, Apr 9, 2010 at 7:01 AM, Research<risk2009@ath.forthnet.gr> wrote: > >> Dear all, >> >> Some time ago I received some very kind help (special thanks to Gabor) to >> construct a function that isolates the n'th working day of each month for >> zoo object (time series) to create monthly data from...

Hello, I have a zoo time series read from an excel file which has some dates the same, such as the following example: 02/10/1995 4925.5 30/10/1995 4915.9 23/01/1996 4963.5 23/01/1996 5009.2 04/03/1996 5031.9 # here 04/03/1996 5006.5 # here 03/04/1996 5069.2 03/05/1996 5103.7 31/05/1996 5107.1 01/07/1996 5153.1 02/08/1996 5151.7 Is there a

Hi, I have two zoo objects (time series of same frequency) say A and B. I need to exchange A's dates for B's. Is there and easy way? I managed to do it by converting A to a vector and pasting it on a zoo vector (all ones) with B's dates but I wonder if there is an easier way by some "zoo" command I have overlooked... Thanks in advance, Costas

Hi, I am having problems installing playwith on a Linux Mint ver. 8 (Helena) computer running R-2.10.1. <src/base/R-2/R-2.10.1.tar.gz> Anybody facing similar problems? Is it a GTK issue? I can not install the cairo related packages/libraries as well. Any pointers very welcome. Thanks + bestregards, Costas [[alternative HTML version deleted]]

Hello again, I merge different zoo time series with prices at different dates. This returns a multivariate zoo object with NA's at various points i.e., 2010-02-28 NA NA NA NA 850.2 2444.4 NA NA NA NA NA NA NA 2010-03-01 61.1 55.3 61.5 81.24 NA NA 1712.2 3.3 11139.3 163.7 2242.4 9015.6 109.791 2010-03-31

Hello, I have a zoo time series object (say a) with the following time stamp/format [1] "1950-01-03 GMT" "1950-01-04 GMT" "1950-01-05 GMT" "1950-01-06 GMT" [5] "1950-01-09 GMT" "1950-01-10 GMT" and another (say b) with [1] "1950-01-05" "1950-01-06" "1950-01-09" "1950-01-10"

Hi, I have to zoo real valued time series "a" and "b" same length. is index(a)<-index(b) same as time(a)<-time(b)? Which one is better? Best, Costas

Hello, Is there a way to force through R the amount of the cpu's cores (or the cpu's utilization level) used under Windows 7 or Linux? Thanks, Costas

Hello, I am having trouple installing doSMP and revoIPC from: https://r-forge.r-project.org/R/?group_id=950 My Linux system: Linux 2.6.35-25-generic #44-Ubuntu SMP Fri Jan 21 17:40:44 UTC 2011 x86_64 GNU/Linux Ubuntu 10.10 \n \l I get this reply: costas at ELEPHANT:~/Downloads$ sudo R CMD INSTALL revoIPC_1.0-3.tar.gz * installing to library ?/home/costas/R/x86_64-pc-linux-gnu-library/2.11? *

Hello, I have various datasets of zoo time series (merged into single frames via the "merge" command) such as date var0 var1 var2 var3 08/07/1996 652.54 0.223922 0.515819 0.502638 08/08/1996 662.59 0.997841 0.000383 0.999806 06/09/1996 655.68 0.901685 0.569763 0.866333 08/10/1996 700.64 0.268855 0.244701 0.329285 08/11/1996 730.82 0.438407 0.501427 0.461374

Dear all, I am not sure I understand fully the functionality of "tryCatch" and "try" commands and how these are used to continue a for/next loop if an error occurs within the loop. Can somebody point me to material (or share some code) with more extensive examples than the ones in the help/FAQ pages? Do explain my problem in more detail: for (i in 100:1000) { ## do

Hello, I have large zoo objects (about 100 or more time series merged next to eachother). Example: X05.Oct.99 X05.Nov.99 X05.Dec.99 X05.Jan.00 X05.Feb.00 X05.Mar.00 X05.Apr.00 X05.May.00 X05.Jun.00 [1,] 5649.3 5679.4 5679.4 5679.4 5679.4 5679.4 5679.4 5679.4 5679.4 [2,] 5682.7 5719.2 5719.2 5719.2 5719.2 5719.2 5719.2