maInd2Coord cannot index a single gene, or vector of length 1. > L <- new("marrayLayout", maNgr = 4, maNgc = 4, maNsr = 22, maNsc = 24) # Index to Coord fails for vector of length 1 (scalar) > maInd2Coord(5, L) Error in "colnames<-"(`*tmp*`, value = c("Grid.R", "Grid.C", "Spot.R", : attempt to set colnames on object with less than two dimensions # Index to Coord ok for vector of >1 > maInd2Coord(5:6, L) Grid.R Grid.C Spot.R Spot.C [1,] 1 1 1 5 [2,] 1 1 1 6 > # Can use a single gene Coord to obtain an index > maCoord2Ind(maInd2Coord(5:6, L)[1,,drop=F], L) [1] 5 Present in packages; packageDescription("marray", field="Version") [1] "1.5.25" packageDescription("marray", field="Version") [1] "1.5.30" on windows. Marcus Marcus Davy Bioinformatics ______________________________________________________ The contents of this e-mail are privileged and/or confidenti...{{dropped}}