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...ould like to somehow constrain all the sibling correlations (twin-sib and sib-sib) to be the same while allowing the twin-twin correlation to be different. Here is some simulated code: set.seed(5) famdata <- matrix(rnorm(400),ncol=4,dimnames=list(NULL,c("Twin1","Twin2","Sib1","Sib2"))) famdata[runif(100)<.2,3] <- NA #20% of sib 1s are missing famdata[runif(100)<.4,4] <- NA #40% of sib 2s are missing cor(famdata,use="pairwise.complete") <R output> Twin1 Twin2 Sib1 Sib2 Twin1 1.00000 0.12027 0....

...the colour codes from above (z) and include the exact locations of each SNP. Is it possible to do that using the image-function? Below I have tried to solve the problem using the basic plot function but I cannot include the colors to that plot. How would that be possible? colnames(z) <- c("sib1","sib2","sib3","sib4") rownames(z) <- paste(rep("SNP", 20), 1:20) z.t <- t(z) #snploc$location represents the location of the SNP in the chromosome snploc <- data.frame(SNP=paste(rep("SNP", 20), 1:20), location=c(4.2,5.8,6.9,3,8,7,5,4...

...the hdd, then booted it. Is there a CVS patch to make syslinux do this isn't of merely just returning an error to the BIOS? Thanks _________________________________________________________________ Download music tracks from 95c here: http://music.ninemsn.com.au/OD2redirect.asp?URL=http://sib1.od2.com/common/config.asp?shop=52&associd=2