Re: [R] Compare species presence and absence between sites

2013-09-28 Thread arun
1 1 #Australia  0 0 0 0 0 0 0 0 0 A.K. From: Elaine Kuo To: arun Sent: Saturday, September 28, 2013 12:23 AM Subject: Re: [R] Compare species presence and absence between sites Hello Arun,  Thanks for the imme

Re: [R] Compare species presence and absence between sites

2013-09-27 Thread arun
t1)<- paste(dat1[,1],dat1[,2],sep="_") A.K. ________________ From: Elaine Kuo To: arun Sent: Friday, September 27, 2013 6:17 PM Subject: Re: [R] Compare species presence and absence between sites Hello Arun,  Thanks for the code, but I have problem replacing

Re: [R] Compare species presence and absence between sites

2013-09-27 Thread Rui Barradas
)<- paste(dat1[,1],dat1[,2],sep="_") A.K. - Original Message - From: Rui Barradas To: Elaine Kuo Cc: "r-help@r-project.org" Sent: Friday, September 27, 2013 7:39 AM Subject: Re: [R] Compare species presence and absence between sites Hello, Something like this?

Re: [R] Compare species presence and absence between sites

2013-09-27 Thread Elaine Kuo
ERS[1:5]),] > lst1<- lapply(seq_len(nrow(dat1)),function(i) > {x<-mat1[unlist(dat1[i,]),]; which(different(x[1,],x[2,]))}) #using Rui's > function > names(lst1)<- paste(dat1[,1],dat1[,2],sep="_") > > > A.K. > > > > - Original Message --

Re: [R] Compare species presence and absence between sites

2013-09-27 Thread arun
- Original Message - From: Rui Barradas To: Elaine Kuo Cc: "r-help@r-project.org" Sent: Friday, September 27, 2013 7:39 AM Subject: Re: [R] Compare species presence and absence between sites Hello, Something like this? different <- function(x, y) x == 1 & y == 0 set.s

Re: [R] Compare species presence and absence between sites

2013-09-27 Thread Rui Barradas
Hello, Something like this? different <- function(x, y) x == 1 & y == 0 set.seed(7054) mat <- matrix(sample(0:1, 500, TRUE), nrow = 5) rownames(mat) <- LETTERS[1:5] colnames(mat) <- sprintf("D%03d", 1:100) different(mat["B",], mat["E",]) Hope this helps, Rui Barradas Em 27-09-2013 11:48,