similar to: round.POSIXt sometimes crashes R (PR#3763)

Dear All, I'm happily extracting data of temperature from an oracle db under R via RODBC. After manipulating the extracted data I put them into a data.frame 'dati' which is as follows: > dati DATA tm. UDINE/RIVOLTO tm.TORINO/CASELLE 1 2005-07-01 22.35 23.80 2 2005-07-02 22.70 22.85 3 2005-07-03 23.80

Hi all, I've experienced this problem using StructTS(x) when the *first* element of x is a NA (R:R1.7.0, os: w2ksp4). Please look at the following code: a=rep(1:7,10) library(ts) #this works StructTS(a) #this works x=a x[2]=NA StructTS(x) #this doesn't work x=a x[1]=NA StructTS(x) The last command returns this error "Error in optim(init[mask], getLike,

Hi all, When i use rsync with on the server : motd file = /etc/rsyncd.motd log file = /var/log/rsyncd.log pid file = /var/run/rsyncd.pid lock file = /var/run/rsync.lock [filieres] path = /home2 comment = Repertoire de sauvegarde des filieres read only = no hosts allow = 172.18.1.246 # vador only dont compress = *.gz *.jpg *.zip *.rpm *.tgz note : the

Dear list, I have a problem with plotting multivariate data and models. I suppose the answer is obvious for experienced users but I didn't find it looking in usual documentation or in the mail archive... Let's say I use a dataset like : a <- sort(round(rnorm(90),3)) niv <- factor(c(rep('B',30), rep('E', 30),

Hi all, I've experienced this problem using step() and stepAIC() when a name of a regressors has blanks in between (R:R1.7.0, os: w2ksp4). Please look at the following code: "x" <- c(14.122739306734, 14.4831100207131, 14.5556459667089, 14.5777151911177, 14.5285815352327, 14.0217803203846, 14.0732571632964, 14.7801310180502, 14.7839362960477, 14.7862217992577)

Dear list I'm trying to solve the following problem since 2 days with no success. Could someone help a newbie, please ? I have a dependant variable which is diameter of shell, and two factors which are level on the beach (3 levels 'B', 'E' and 'H') and a hydrodynamics indice (3 levels 1, 2 and 3) To study diameter variations according to these factors, I may use

dear list, I'm a newbie with R but it seems very interesting to me. First, to train myself and students, I'd like to use it for teaching labs next year. one of my labs deals with the barn owl predation in my region. tudents have to work on a contingency table tytogrp : station1 station2 station3 ... n1,1 n1,2 n1,3 ... n2,1 n2,2 n2,3 ...

Dear R developers: When using R.0.99a (Version 0.99.0 Patched (February 9, 2000), source compiled with gcc under SuSE 6.2) on a PIII 500Mhz Machine under SuSE 6.2 Linux I found the following bug: x <- matrix(0,10,0) rbind(x,2) causes an R-crash with the message "Gleitkomma-Ausnahme" (floating point exception) which is probably due to the non-applicability of the recyling

Hi, I was trying like to print out data frame with POSIXct column in html format using xtable package, but I got error message when trying to print the table. Here is example: aaa<-data.frame(as.POSIXct(strptime('03 2005', '%d %Y')),0) aaa.tab<-xtable(aaa) print(aaa.tab) Error in Math.POSIXt(x + ifelse(x == 0, 1, 0)) : abs not defined for POSIXt objects

Hi guys. The 'col'-parameter in the 'hist'-method for the classes 'POSIXt' and 'date' does not perform as it does in the default 'hist'-method. Unfortunately, it does not only change the filling color of the boxes, but also the color of the axislines. [Using 'graphics'-package version 2.2.0] Examples: # with POSIXct-object hist(.leap.seconds,

Hi all, I'm plotting a histogram of dates and would like to shade the bars, e.g. hist(.leap.seconds,"years",col='gray',freq=T) -but the axis color also changes, how do I prevent that? thx in advance Janus [[alternative HTML version deleted]]

Hello! na.encode does not have any effect on format of NA values of Date and POSIXct (POSIXlt?) "atomic" classes in a data.frame. Here is the example (the same in R 2.3.1 and 2.5.0 (2006-09-19 r39409)): testData <- data.frame(num=c(NA, 2.6), int=c(1, NA), fac=factor(c(NA, "abc")), cha=c("a",

Hello, ?DateTimeClasses states that "one can add or subtract a number of seconds or a 'difftime' object from a date-time object, but not add two date-time objects." So, is the below expected behavior? > x <- Sys.time() > x [1] "2007-02-21 16:19:56 CST" > x + as.difftime("1","%H") [1] "2007-02-21 16:19:57 CST" Warning

x <- seq(as.POSIXct("2000-01-01"), by = "days", length = 20) cut(x, breaks = 3) # Error in `levels<-.factor`(`*tmp*`, value = character(0)) : # number of levels differs cut(as.Date(x), breaks = 3) # Error in `levels<-.factor`(`*tmp*`, value = character(0)) : # number of levels differs Index: base/R/datetime.R

Dear all, I hope this is a right place to post this; r-help might be appropriate but it looks like I'm suggesting a change in base package, so I decided to post here. (+ Apologies if that has been changed recently -- the version I'm using is R.2.12.2 on Windows.) I've noticed an unexpected behavior of trunc.POSIXt: foo <- seq(as.POSIXct( "2009-10-23 22:00:00"),

For certain values, round.POSIXt(tm,'day') does not round to midnight as documented. The reason is that trunc.POSIXt() does not adjust the value of the isdst element. Assuming my assessment of the reason is correct, I have a potential solution to offer. Additional discussion is in bug report #1543. -Don > x <- c(as.POSIXct('2001-4-1 3:15'),as.POSIXct('2001-5-2

There seems to be a problem in the way `+` is dispatched for POSIXt/difftime (R 2.8.0 Windows). With the following definitions: t0 <- as.POSIXct('2009-01-01 00:00') halfhour.mins <- as.difftime(30,units='mins') I would have thought that the straightforward answer to Suresh's question would be something like t0 + halfhour.mins * (0:47) And indeed, if we

I am still experiencing problems with seq.POSIXt() missing off the last day of the series: > seq(as.POSIXct("2004-03-25"),as.POSIXct("2004-03-31"),by="DSTdays") [1] "2004-03-25 GMT Standard Time" "2004-03-26 GMT Standard Time" "2004-03-27 GMT Standard Time" [4] "2004-03-28 GMT Standard Time" "2004-03-29 GMT Daylight

Dear all, according to the Help-page of DateTimeClasses {base} I should be able to do time - z with time date-time objects z a numeric vector (in seconds) or an object of class "difftime". However, on R version 2.6.0 (Windows XP) I get > Sys.time() - as.difftime(c("0:3:20", "11:23:15")) Time differences in mins [1] 1191837998 1191837318

I can't reach r-project.org at the moment so cannot check whether this is a known bug. > version _ platform i386-pc-mingw32 arch x86 os Win32 system x86, Win32 status major 1 minor 3.0 year 2001 month 06 day 22 language R The