[R] VectorComparison
Hi all, I am not exactly fluent in R and I got stuck with this. I would like to compare each elements of a vector A with any of the elements in Vector B. For some reasons it does not work. StartDate = as.Date(01/10/2007, %d/%m/%Y) TimeSpan = seq(StartDate, by = 'days', length = length(myAverageCWVs$X1986)) TickLabels = c(2007-10-01, 2007-11-01, 2007-12-01, 2008-01-01) TimeSpan[1:40] == TickLabels Here I would expect TRUE for teh first entry and then TRUE for the entry related to 2007-11-01. This doesn't seem to be the case. [1] TRUE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [13] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [25] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [37] FALSE FALSE FALSE FALSE Thanks you in advance for any help. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] VectorComparison
Hi, You might consider ?match For example: StartDate = as.Date(01/10/2007, %d/%m/%Y) TimeSpan = seq(StartDate, by = 'days', length = 40) TickLabels = as.Date(c(2007-10-01, 2007-11-01, 2007-12-01, 2008-01-01), %Y-%m-%d) TimeSpan[1:40] == TickLabels # not designed for comparing multiple values on each side TickLabels %in% TimeSpan[1:40] # Find which TickLabels are in TimeSpane TimeSpan[1:40] %in% TickLabels # Find which TimeSpane are in TickLabels HTH, Josh On Mon, Oct 18, 2010 at 5:50 AM, Paolo Agnolucci agnolucp...@googlemail.com wrote: Hi all, I am not exactly fluent in R and I got stuck with this. I would like to compare each elements of a vector A with any of the elements in Vector B. For some reasons it does not work. StartDate = as.Date(01/10/2007, %d/%m/%Y) TimeSpan = seq(StartDate, by = 'days', length = length(myAverageCWVs$X1986)) TickLabels = c(2007-10-01, 2007-11-01, 2007-12-01, 2008-01-01) TimeSpan[1:40] == TickLabels Here I would expect TRUE for teh first entry and then TRUE for the entry related to 2007-11-01. This doesn't seem to be the case. [1] TRUE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [13] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [25] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [37] FALSE FALSE FALSE FALSE Thanks you in advance for any help. [[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. -- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.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] VectorComparison
Use %in% instead of '==' On Mon, Oct 18, 2010 at 10:50 AM, Paolo Agnolucci agnolucp...@googlemail.com wrote: Hi all, I am not exactly fluent in R and I got stuck with this. I would like to compare each elements of a vector A with any of the elements in Vector B. For some reasons it does not work. StartDate = as.Date(01/10/2007, %d/%m/%Y) TimeSpan = seq(StartDate, by = 'days', length = length(myAverageCWVs$X1986)) TickLabels = c(2007-10-01, 2007-11-01, 2007-12-01, 2008-01-01) TimeSpan[1:40] == TickLabels Here I would expect TRUE for teh first entry and then TRUE for the entry related to 2007-11-01. This doesn't seem to be the case. [1] TRUE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [13] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [25] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [37] FALSE FALSE FALSE FALSE Thanks you in advance for any help. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40 S 49° 16' 22 O [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] VectorComparison
Yes - that worked. Thank you. Incidentally I was also comparing a date to a string which surely didn't help Thanks again Ron On Mon, Oct 18, 2010 at 2:01 PM, Henrique Dallazuanna www...@gmail.comwrote: Use %in% instead of '==' On Mon, Oct 18, 2010 at 10:50 AM, Paolo Agnolucci agnolucp...@googlemail.com wrote: Hi all, I am not exactly fluent in R and I got stuck with this. I would like to compare each elements of a vector A with any of the elements in Vector B. For some reasons it does not work. StartDate = as.Date(01/10/2007, %d/%m/%Y) TimeSpan = seq(StartDate, by = 'days', length = length(myAverageCWVs$X1986)) TickLabels = c(2007-10-01, 2007-11-01, 2007-12-01, 2008-01-01) TimeSpan[1:40] == TickLabels Here I would expect TRUE for teh first entry and then TRUE for the entry related to 2007-11-01. This doesn't seem to be the case. [1] TRUE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [13] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [25] FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE FALSE [37] FALSE FALSE FALSE FALSE Thanks you in advance for any help. [[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.htmlhttp://www.r-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40 S 49° 16' 22 O [[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.
