Re: [R] date time manipulation- R 2.15.1 windows 7
Hi Arun, Thank u so much for your help. It helped me solve the problem THANK YOU -Yashvardhan Kajaria On Thu, Mar 14, 2013 at 11:28 PM, arun smartpink...@yahoo.com wrote: HI, 1. date1-c(5 jan 2013, 1 jan 2013) date1-as.Date(date1,format=%d %b %Y) date1[1]-date1[2] #Time difference of 4 days 2. If you only have the week number of year without any other information, it would be difficult to predict which day that would be. You could get the week number from the date: library(lubridate) date2-2013-01-26 wday(ymd(date2),label=TRUE) # 1 parsed with %Y-%m-%d #[1] Sat week(ymd(date2)) # 1 parsed with %Y-%m-%d #[1] 4 A.K. - Original Message - From: yash kajaria yash.kaja...@gmail.com To: r-help@r-project.org Cc: Sent: Thursday, March 14, 2013 9:45 AM Subject: [R] date time manipulation- R 2.15.1 windows 7 Hi, I wanted to learn how to solve a date and time manipulation where i can do the following two 1. difference of two dates eg (differnce between 5th jan 2013 and 1st jan 2013) 2.Suppose i have week number of the year, i want to know if i can find out the day it refers to eg( say week 2 of 2013 would be 6th jan 2013 and the day is sunday) i need my result to tell me that its the 6th of jan 2013 as well as the day (sunday) Can u please help me out? Thanks, Yashvardhan Kajaria [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] date time manipulation- R 2.15.1 windows 7
Hi, I wanted to learn how to solve a date and time manipulation where i can do the following two 1. difference of two dates eg (differnce between 5th jan 2013 and 1st jan 2013) 2.Suppose i have week number of the year, i want to know if i can find out the day it refers to eg( say week 2 of 2013 would be 6th jan 2013 and the day is sunday) i need my result to tell me that its the 6th of jan 2013 as well as the day (sunday) Can u please help me out? Thanks, Yashvardhan Kajaria [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] date time manipulation- R 2.15.1 windows 7
A good place to start might be http://www.jstatsoft.org/v40/i03/paper for the lubridate package or have a look at the zoo package John Kane Kingston ON Canada -Original Message- From: yash.kaja...@gmail.com Sent: Thu, 14 Mar 2013 19:15:00 +0530 To: r-help@r-project.org Subject: [R] date time manipulation- R 2.15.1 windows 7 Hi, I wanted to learn how to solve a date and time manipulation where i can do the following two 1. difference of two dates eg (differnce between 5th jan 2013 and 1st jan 2013) 2.Suppose i have week number of the year, i want to know if i can find out the day it refers to eg( say week 2 of 2013 would be 6th jan 2013 and the day is sunday) i need my result to tell me that its the 6th of jan 2013 as well as the day (sunday) Can u please help me out? Thanks, Yashvardhan Kajaria [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. FREE 3D EARTH SCREENSAVER - Watch the Earth right on your desktop! __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] date time manipulation- R 2.15.1 windows 7
On Thu, Mar 14, 2013 at 9:45 AM, yash kajaria yash.kaja...@gmail.com wrote: Hi, I wanted to learn how to solve a date and time manipulation where i can do the following two 1. difference of two dates eg (differnce between 5th jan 2013 and 1st jan 2013) 2.Suppose i have week number of the year, i want to know if i can find out the day it refers to eg( say week 2 of 2013 would be 6th jan 2013 and the day is sunday) i need my result to tell me that its the 6th of jan 2013 as well as the day (sunday) Try this: dif - d - as.Date(cut(d, year)) dif Time difference of 4 days as.numeric(dif) [1] 4 The year and week don't imply the day of the week. We can input the year, week number and day of the week to get the date: year - 2013 week - 2 day - Sun as.Date(paste(year, week-1, day), %Y %W %a) [1] 2013-01-06 -- Statistics Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] date time manipulation- R 2.15.1 windows 7
HI, 1. date1-c(5 jan 2013, 1 jan 2013) date1-as.Date(date1,format=%d %b %Y) date1[1]-date1[2] #Time difference of 4 days 2. If you only have the week number of year without any other information, it would be difficult to predict which day that would be. You could get the week number from the date: library(lubridate) date2-2013-01-26 wday(ymd(date2),label=TRUE) # 1 parsed with %Y-%m-%d #[1] Sat week(ymd(date2)) # 1 parsed with %Y-%m-%d #[1] 4 A.K. - Original Message - From: yash kajaria yash.kaja...@gmail.com To: r-help@r-project.org Cc: Sent: Thursday, March 14, 2013 9:45 AM Subject: [R] date time manipulation- R 2.15.1 windows 7 Hi, I wanted to learn how to solve a date and time manipulation where i can do the following two 1. difference of two dates eg (differnce between 5th jan 2013 and 1st jan 2013) 2.Suppose i have week number of the year, i want to know if i can find out the day it refers to eg( say week 2 of 2013 would be 6th jan 2013 and the day is sunday) i need my result to tell me that its the 6th of jan 2013 as well as the day (sunday) Can u please help me out? Thanks, Yashvardhan Kajaria [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
