similar to: tzone and DST

Let's say you have a dataframe of car trade-ins. For example, each row contains oldcar newcar qty and a typical entry could be lexus bmw 1 I put the qty column to allow for fleet purchases, where one purchase may convert multiple cars at once. I'd like to show what's going on. I could do a histogram of newcar to show the frequency each type of car is bought. If there

Hello everybody, it looks like the presense of some (do know know which) S4 methods for a given S4 class degrades the performance of xtfrm (used in 'order' in new R-devel) by a factor of millions. This is for classes that ARE derived from numeric directly and thus should be quite trivial to convert to numeric. Consider the following example: setClass("TimeDateBase",

Greetings - I'm battling POSIXct, as per the code below. My input is actually an XL file, but the weird results below correctly model what I am seeing in my program. Before I punt and use lubridate or timeDate, could anyone please help me understand why POSIXct forces my variable back to GMT? I suspect that I'm not properly coding the tzone value, but it does not throw an

Hello: What is the recommended method for retaining the tzone attributes when concatonating POSIXct objects? > (d1 <- ISOdate(1970,1,1)) # Sets the tzone attribute = GMT [1] "1970-01-01 12:00:00 GMT" > (d1.2 <- c(d1, d1)) # c(..) strips the tzone attribute, displays in the time zone of the operating system [1] "1970-01-01 04:00:00 PST" "1970-01-01

I got a new laptop in September and installed Stretch (I had been using Jessie), and I tried to follow the instructions on https://cran.r-project.org/bin/linux/debian/, as I had multiple times in the past: I added deb http://cran.wustl.edu/bin/linux/debian stretch-cran34/ to the end of sources.list, I followed the rest of the above directions as of early September, as best I recall, and I only

I stumbled upon a typo in a time zone name: Irtutsk should be Irkutsk. A patch is attached. I also checked that this is the only bug of its kind in this file, i.e., all the other Olson time zones occurring in the file can also be found in Unicode Common Locale Data Repository. - Mikko Korpela Index: src/extra/tzone/registryTZ.c ===================================================================

I couldn't find anything in the chron or timeDate packages, and a good search yielded rounding to the nearest half hour, which I don't want. The data: structure(list(Date = structure(c(1209625080, 1209641460, 1209652500, 1209676800, 1209682860, 1209692100, 1209706980, 1209722580, 1209726300, 1209739620, 1209762780, 1209765720, 1209770520, 1209791040, 1209812580, 1209829920,

Please find below the package announcement for the R package lubridate available from cran. Thank you, Garrett Grolemund Rice University ##lubridate Date-time data can be frustrating to work with in R. R commands for date-times are generally unintuitive and change depending on the type of date-time object being used. Moreover, the methods we use with date-times must be robust to time zones,

Please find below the package announcement for the R package lubridate available from cran. Thank you, Garrett Grolemund Rice University ##lubridate Date-time data can be frustrating to work with in R. R commands for date-times are generally unintuitive and change depending on the type of date-time object being used. Moreover, the methods we use with date-times must be robust to time zones,

Wanted to raise two questions: 1. Is bugs.r-project.org down? I haven't been able to reach it for two or three days: ``` ping bugs.r-project.org PING rbugs.research.att.com (207.140.168.137): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 Request timeout for icmp_seq 3 Request timeout for icmp_seq 4 Request timeout for icmp_seq 5

Full_Name: Suharto Anggono Version: 2.8.1 OS: Windows Submission from: (NULL) (125.165.84.118) PR#14076 inspired me to write this. > t1 <- as.POSIXct("1970-01-01 00:00:00", tz="GMT") > t2 <- as.POSIXlt("1970-01-01 00:00:00", tz="GMT") > t1 - t2 Time difference of 7 hours Above, t1 and t2 represent the same time in the same specified

Hola, El problema que tienes es en esta sentencia: ymd_hms(TEM$TIMESTAMP) No la estás asignando a nada. Lo suyo es que hagas algo así: TEM$myTimeStamp <- ymd_hms(TEM$TIMESTAMP) Y crees el intervalo (seq...) on esta nueva variable. El error que obtienes es que "TEM$TIMESTAMP" al leerla del fichero es un string, pero en la lectura automáticamente (salvo que le digas que no lo

Buen día para todos, Tengo un dataframe nombrado como mydata en donde una de sus variables en columna de nombre *date* tiene una secuencia de fechas en formato *ymd_hms*. Ahora quiero convertir este formato a *dmy_hms * en toda la variable *date.* Me podrían ayudar a saber como debo hacerlo? Quedo atento a sus comentarios. Saludos, Gracias, *JONATHAN BARTOLO PINZON * *"En los

Hello, Sorry if anyone gets this message twice, as my mailserver may not be working. Thanks for your response. Your idea makes a lot of sense to me, but I've been unable to get seconds to work. I ended up with this format finally: "2007-10-31_16:20:22" Problem is I am unable to get it recognized as a date using timeDate(): R>

For a model I am working on, I have samples organized by year and week of the year. For this model, the data (year and week) comes from the basic sample data, but I require a value representing the amount of time since the sample was taken (actually, for the purpose of the model, it is sufficient to use the number of weeks from the middle of the sample week to the present). What I have found so

Dear R Experts: I am trying to convert a date and time character field to timeDate where the month is presented as three letters, such as "JUN" for June, etc. This is an example of the full character field: "04-MAY-11 1428" What is the proper format syntax? I've tried timeDate("04-MAY-11 1428",format="%d-%m-%y %H%M") but only get GMT [1]

Hello, I'm trying to build a for loop, where I estimate a series of models with different sets of (time series) data. However my for loop doesn't recognize the "i" ##################### code################ window.1=anomalies.CAK[(positions(anomalies.CAK)>=timeDate("1/1/1971") & positions(anomalies.CAK)<=timeDate("6/30/1991") )] ....

Given S4 methods [ and [<-, how do I write the Rd-file usage clause for the latter one? What I have now is: \S4method{[}{TimeSeries,TimeDate,missing}(x, i, j, ..., drop) \S4method{[<-}{TimeSeries,TimeDate,missing,ANY}(x, i, j, ..., value) which results in the following output: ## S4 method for signature 'TimeSeries, TimeDate, missing': x[i, j, ..., drop]

Anybody know how to invoke control panel applets? What I really want to do is make Wine use my default Date format that I used in Windows, but it's reverted to the goddawful American usage (with two digit years, no less). wine timedate.cpl (or wine C:/windows/system/timedate.cpl) fails with an error 193 and nothing in the log -- derek

Sorry, la función por el formato que tienen tus fechas debe de ser "dmy_hms()"... Saludos, Carlos Ortega www.qualityexcellence.es El 25 de septiembre de 2014, 18:14, Eduardo Bieñkowski <edukoski en gmail.com> escribió: > Si lo proceso con date<-ymd_hms(dato$actualizado) no me da error pero la > transformación no es la correcta > > > head(dato$actualizado) >