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...dice, -log10(data$Pvalue), type="l", xaxt="n", main="Result", xlab="Chromosome", ylab=expression(paste(-log[10]," p-value"))) axis(1, v1,labels=FALSE ) axis(1, v2, seq(1:3), tick=FALSE, cex.axis=.6) Can this be done with lattice xyplot? -- Leah Preus Biostatistician Roswell Park Cancer Institute [[alternative HTML version deleted]]

Hi, I have two vectors, each of length 45000. How do I compare the vectors to ascertain if they are identical. Secondly if they are NOT identical, how do I determine the indices of positions at which the vectors differ? Thanks, Anjan -- =================================== anjan purkayastha, phd. research associate fas center for systems biology, harvard university 52 oxford street cambridge ma