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...=3D "y") #Error in if (min(height + offset) <=3D 0) stop("log scale error: at least = one 'height + offset' value <=3D 0") : # missing value where TRUE/FALSE needed This is easily corrected by adding na.rm =3D TRUE to this logical test and = to the calculation of rectbase where min() is used, as per code below Best wishes, Colin sessionInfo() R version 2.7.0 (2008-04-22)=20 i386-pc-mingw32=20 locale: LC_COLLATE=3DEnglish_United Kingdom.1252;LC_CTYPE=3DEnglish_United Kingdom.= 1252;LC_MONETARY=3DEnglish_United Kingdom.1252;LC_NUMERIC=3DC;LC_TIME=3DEng= lish_Unite...

R Version 2.2.0 Platform: Windows When I use barplot but select a ylim value greater than zero, the graph is distorted. The bars extend below the bottom of the graph. For instance the command produces a problematic graph. barplot(c(200,300,250,350),ylim=c(150,400)) Any help would be appreciated. Paul [[alternative HTML version deleted]]

Dear R-users, I am using R version 2.10.1 under windows. In a barplot, I want to mark one of the bars with a special border color. For example: barplot(c(3, 7, 11), border = c(NA, "red", NA)) But how to do this when the bars are stacked? for example: barplot(matrix(1:6, ncol=3)) # border of second bar (i.e. the one with total height = 7) should be red again, I try: barplot(matrix(1:6,