Re: [R] multiple logical comparisons
try this one, `%ni%` - Negate(`%in%`) Best, baptiste __ 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] multiple logical comparisons
Hi, I would like to compare a column of data with a vector. I have this data.frame for example; x - data.frame(A = c(1:5), B = c(1,1,2,2,2)) Now I have a search vector: search - c(1,3,5) when I now try to get all the data-rows which have a 1, a 3, or a 5 in column A and a 2 in column B, I tried this: x[x$B == 2 x$A == search,] I hoped to get 3 2 5 2 as output. But I get an empty set. Can someone help me on that? _ search - c(1,3,5) x - data.frame(A = c(1:5), B = c(1,1,2,2,2)) x[x$B == 2 x$A == search,] __ 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] multiple logical comparisons
Martin Batholdy wrote: Hi, I would like to compare a column of data with a vector. I have this data.frame for example; x - data.frame(A = c(1:5), B = c(1,1,2,2,2)) Now I have a search vector: search - c(1,3,5) when I now try to get all the data-rows which have a 1, a 3, or a 5 in column A and a 2 in column B, I tried this: x[x$B == 2 x$A == search,] I hoped to get 3 2 5 2 as output. See ?%in% x[x$B == 2 x$A %in% search, ] __ 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] multiple logical comparisons
thanks! Now I have one more question; How can I do the reverse? when %in% is == (for two vectors of different lengths); what is the equivalent to != ? On 21.03.2010, at 22:33, Erik Iverson wrote: Martin Batholdy wrote: Hi, I would like to compare a column of data with a vector. I have this data.frame for example; x - data.frame(A = c(1:5), B = c(1,1,2,2,2)) Now I have a search vector: search - c(1,3,5) when I now try to get all the data-rows which have a 1, a 3, or a 5 in column A and a 2 in column B, I tried this: x[x$B == 2 x$A == search,] I hoped to get 3 2 5 2 as output. See ?%in% x[x$B == 2 x$A %in% search, ] __ 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] multiple logical comparisons
Martin Batholdy wrote: thanks! Now I have one more question; How can I do the reverse? when %in% is == (for two vectors of different lengths); what is the equivalent to != ? a %in% b returns a logical vector, so !a %in% b returns its negation. See order of precedence in ?Syntax. __ 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] multiple logical comparisons
Just read the help page: ?%in% %w/o% - function(x,y) x[!x %in% y] #-- x without y (1:10) %w/o% c(3,7,12) -- David. On Mar 21, 2010, at 5:57 PM, Martin Batholdy wrote: thanks! Now I have one more question; How can I do the reverse? when %in% is == (for two vectors of different lengths); what is the equivalent to != ? On 21.03.2010, at 22:33, Erik Iverson wrote: Martin Batholdy wrote: Hi, I would like to compare a column of data with a vector. I have this data.frame for example; x - data.frame(A = c(1:5), B = c(1,1,2,2,2)) Now I have a search vector: search - c(1,3,5) when I now try to get all the data-rows which have a 1, a 3, or a 5 in column A and a 2 in column B, I tried this: x[x$B == 2 x$A == search,] I hoped to get 3 2 5 2 as output. See ?%in% x[x$B == 2 x$A %in% search, ] __ 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.
