Jana.K
2011-Oct-06 13:18 UTC
[R] Urgent help needed for honours project - breaks between races in one year
Hi to anyone who is willing to help, I have a csv. file which has 1999 horses as the rows and the age(in years) of the horse at each race as columns. Ive read this file into R and called it 'horses'. Im trying to find the longest break between each race in the horse's first year of racing. I already have a numeric called 'age.first' which is the age at which each horse had its first race. I understand if i want to look at the breaks a year from the first race i have to add +1. But i am not sure how to write the code into R. Can anyone help me get the longest break in the first year of racing for each horse? Jana. -- View this message in context: http://r.789695.n4.nabble.com/Urgent-help-needed-for-honours-project-breaks-between-races-in-one-year-tp3878187p3878187.html Sent from the R help mailing list archive at Nabble.com.
Steve Taylor
2011-Oct-06 19:58 UTC
[R] Urgent help needed for honours project - breaks between races in one year
This might help: if x is a vector of the race days then max(diff(sort(x))) finds the biggest gap between consecutive values.>>>From: "Jana.K" <borjana.kragic@gmail.com> To:<r-help@r-project.org> Date: 7/Oct/2011 4:47a Subject: [R] Urgent help needed for honours project - breaks between races in one year Hi to anyone who is willing to help, I have a csv. file which has 1999 horses as the rows and the age(in years) of the horse at each race as columns. Ive read this file into R and called it 'horses'. Im trying to find the longest break between each race in the horse's first year of racing. I already have a numeric called 'age.first' which is the age at which each horse had its first race. I understand if i want to look at the breaks a year from the first race i have to add +1. But i am not sure how to write the code into R. Can anyone help me get the longest break in the first year of racing for each horse? Jana. -- View this message in context: http://r.789695.n4.nabble.com/Urgent-help-needed-for-honours-project-breaks-between-races-in-one-year-tp3878187p3878187.html Sent from the R help mailing list archive at Nabble.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. [[alternative HTML version deleted]]