Nearest Neighbors
Look at function get.knn in package FNN:
library(FNN) set.seed(42) x <- rnorm(100, 50, 15) y <- rnorm(100, 50, 15) dat <- data.frame(x, y) knns <- get.knn(dat, k=4) str(knns) knns.ndx <- data.frame(knns[["nn.index"]]) head(knns.ndx)
knns is a list with two components, a matrix of indices to the nearest neighbors and a matrix of distances to the nearest neighbors. ---------------------------------------------- David L Carlson Associate Professor of Anthropology Texas A&M University College Station, TX 77843-4352
-----Original Message----- From: r-help-bounces at r-project.org [mailto:r-help-bounces at r- project.org] On Behalf Of olemissrebs1123 Sent: Tuesday, July 24, 2012 1:27 PM To: r-help at r-project.org Subject: Re: [R] Nearest Neighbors I don't see the "obvious" portion. What I am looking for is an output that gives me an n*k matrix n (x,y) pairs k neighbors but using order say 4. -- View this message in context: http://r.789695.n4.nabble.com/Nearest- Neighbors-tp4637618p4637648.html Sent from the R help mailing list archive at Nabble.com.
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