So I guess I was thinking like a fuzzy if. I'm matching a number in my matrix and I would like to see if the numbers are the same to 0.1 accuracy. So in an if statement I would do something like:
if(any((A[i,6] - B[j,6]) <= 0.1)) is this possible with match? Sorry for my lack of R knowledge. -----Original Message----- From: jim holtman [mailto:[EMAIL PROTECTED] Sent: Wednesday, November 29, 2006 7:17 PM To: H. Paul Benton Subject: Re: [R] better define: matrix comparison and cbind issue What do you mean by 'fuzzy'? If you want to compare multiple columns, you can compare each one separately and then use boolean AND/OR to combine them in whatever way you desire. col1 <- is.na(match(A[,1], B[,1])) col2 <- is.na(match(A[,2], B[,2])) A[col1 & col2,] # rows with no matches A[col1 | col2,] # rows with none or one match On 11/29/06, H. Paul Benton <[EMAIL PROTECTED]> wrote: > Jim, > Is there a way to make match fuzzy? I had a look at ?match but > couldn't see anything about it so I thought I would as the guru. Also can I > do something like > index <- is.na(match(A[,1 & 2], B[,1 & 2])) > ? > > > index <- is.na(match(A[,1 & 2], B[,1 & 2])) > > index > [1] TRUE TRUE TRUE TRUE TRUE > > A[index,] > V1 V2 V3 V4 V5 > 1 A v w x z > 2 G x z y w > 3 C y v z x > 4 D x v w z > NA <NA> <NA> <NA> <NA> <NA> > > Thanks again, > > PB ______________________________________________ R-help@stat.math.ethz.ch 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.
