similar to: Date-Time-Stamp input method for user-specific formats

Hi all. I'm reading in a flat, comma-delimited flat file using read.csv. It works marvelously for the most part. I am using the colClasses argument to, basically, create numeric, factor and character classes for the columns I'm reading in. However, a couple of the fields in the file are date fields. I'm fully aware that POSIXct can be used as a class, however the field must obey,

Hi all, I have tried to create a DocumentTermMatrix with a tm package, but i get this error : Error in tolower(txt) : invalid input 'PROD Z LAHKO GNETNO MELJNO GLINO, ... in 'utf8towcs' I tried doing this as it is showed in : http://www.r-project.org/doc/Rnews/Rnews_2008-2.pdf (An Introduction to Text Mining), with this R code :

Hi. I have a huge list called twitter: > dim(twitter) NULL > str(twitter) List of 1 $ :Classes 'PlainTextDocument', 'TextDocument', 'character' atomic [1:35575] 11999;10:47:14;20;10;2009;ObamaLouverture;Trails Mixed Lessons For Governance From Campaigner-in-chief: President obama jumps campaign 09 tuesday..

Hi. I am trying to install a package called DMwR http://cran.r-project.org/web/packages/DMwR/index.html located here: http://cran.r-project.org/bin/windows/contrib/r-release/DMwR_0.2.1.zip on windows 7. I am using R 2.10.1. I also tried typing something like this but it did not work well. install.packages(c(" http://cran.r-project.org/bin/windows/contrib/r-release/DMwR_0.2.1.zip

Hi, I would appreciate if somebody could help me with this small issue... I have a dataframe like this (originaly has more than 100 000 rows): > subz jul time dtime fix ddawn ddusk day 101608 15006 2011-02-01 19:14:49 19.24694 noon 7.916667 19.88333 1 101609 15006 2011-02-01 19:24:49 19.41361 midnight 7.916667 19.56667 1 101610 15006 2011-02-01

Dear R-Users, I have a data file with timestamps and I wanted to use POSIXct time data type to represent the respective column. I played around with the type and found a couple of issues: * there seems to be no direct way of reading datetimes into a variable. Let's say this is my file "1992-02-27 23:03:20 PST" "1992-02-27 22:29:56 PST" "1992-01-14 01:03:30 PST"

This error can arise when getOption("width") is too small. 80 seems to be the limit for me with R-3.3.2 on Windows. Bill Dunlap TIBCO Software wdunlap tibco.com On Wed, Mar 8, 2017 at 10:28 PM, Spencer Graves <spencer.graves at prodsyse.com> wrote: > Hello: > > > I tried "debug(help)" with the problem mentioned below. It stopped > with a call to

Is there a quick function that can convert minutes (seconds) after midnight to a time? i.e 670.93 (minutes after midnight) --> 11:10:56.** I know it can be done by hand but I thought there must be a function for this already. Thank you. [[alternative HTML version deleted]]

Guys, I wrote to the finance mailing list earlier with my questions but was directed here. Sorry for the repeat. --------------- library(quantmod) .... now <- Sys.time() midnight <- strptime() # <---- I want to make this a static variable that will be equal to 12:00:00 am but I dont know what to put here. I keep getting NA for everything I do if(now == midnight) {

I use POSIXct for datetimes. Is thee a timeAlign function that I can use where : align by year direction -1 ==> start of this year direction 1 ==> start of next year align by week direction -1 ==> date on last sunday direction 1 ==> date on next sunday align by day direction -1 ==> time at past midnight direction 1 ==> time at this comming

Hello! I am not experienced enough to know whether I have found a bug or whether I am just ignorant. I have been trying to use the tm package to read in material from RSS 2.0 feeds, which has required grappling with writing a reader for that flavour of XML. I get an error - "Error : 1: EntityRef: expecting ';' - which I think I've tracked down. The feed being processed is from

Hi, I’m using R (TM package) for text mining and I’m having problems filtering articles out of my data set by local meta data. Here is the code: *data <- ("C:/… /19970331")* * * * * *rs <- ReutersSource(data , encoding = "UTF-8")* *RC <- VCorpus(DirSource(data), readerControl = list(reader = readRCV1asPlain,* * language = "en_US",* * load =

Playing with time ranges - using the examples found in one of the asterisk cook books... (pdf - page 17) ; After Hours include => night_menu|00:00-08:00|Tue-Fri|*|* include => night_menu|17:00-24:00|Mon-Thu|*|* this gives... ... pbx.c:2962 get_timerange: 24:00 isn't a valid end time.... -- Including context 'night_menu|17:00-24:00|Mon-Thu|*|*' in context 'default'

Hi all, I''ll attach a new version zfs-auto-snapshot including some more improvements, and probably some new bugs. Seriously, I have tested it, but certainly not all functionality, so please let me know about any (new) problems you come across. Except from the change log: - Added support to schedule using at(1), see README.zfs-auto-snapshot.txt - take_snapshot will only run if

Hi, If I have the following data.frame >y time val 1 08:00:05.834 1 2 08:03:13.345 2 3 08:10:12.443 3 > and the following function which converts the time string to the number of milliseconds since midnight > str_to_millis function( s ) { a <- as.numeric( unlist( strsplit(s,":",fixed="TRUE") ) ) m <- a[1]*3600000 + a[2]*60000 + a[3]*1000 }

I have a dataset, which contains a day column that I would like to retrieve results on. Is there any reason why daily_stats.where(''day = Date(?)'', dte).first returns and empty set, daily_stats.find(:first, :conditions => [''date(day) = ?'', dte]) returns the correct data and daily_stats.where({:created_at => (date.midnight - 1.day)..date.midnight}).first

Hello, i need to have some jobs scheduled in the background and executed at specific times. I wanted to make a worker who does that - and it works a little bit - but i had an enlightment... why not make bgdrb itself play that role? i mean, the MiddleMan has already everything needed! a timer thread, currently used only for deleting old workers and the workers itself. since im not familiar with

Dear R-users, I use unlist of POSIX dates to extract the year, hour etc. With that I can search for files in my database which are in the form 'yyyymmddhh_synops.txt' However, I get stucked during midnight where unlist just gives NA's. The script is given below, the problem accurs at acc.period[16] (midnight). However when I write out the character, unlist works well. But

I'm a bit displeased at the way this happened. I received an email from VoicePulse. Here's some excerpts: ------------------ >We're sending you this important update so you can take advantage of improvements we've >been making to your VoicePulse Connect! service. >We've been working hard on improving the audio quality and reliability of your Connect! >service,

Hello, we are receiving some data, sample below - with a weird time/date stamp format, we need some help with R on converting this time date stamp to a useable field in R, date and time in a data-frame. The developer says its the number of milliseconds since midnight, January 1, 1970. sample: *1232558018624* --------------------- How do I interpret the time stamp? Is there a date, i need