Sorry all, My mistake! The missing parts are as follows: Raw$Date1<-as.Date(Raw$Date,"%d/%m") culr<-ifelse(Raw$Year=="Y2002","Year 2002","Year 2014") library(lattice) Many thanks. With best regards,Christine
Jim Lemon <drjimle...@gmail.com> 於 2015年12月1日 (週二) 4:01 PM 寫道﹕ Hi Christine,When I try to run your script, the plot fails: Error in eval(expr, envir, enclos) : object 'culr' not found> names(Raw)[1] "Date" "Year" "Station" "Abun" "Date1" so I changed the second line to: groups=Year, and it did work. The default (pink, gray) background colors for the symbols do appear when the symbol is changed to pch=21. The arguments col="black",bg=c("gray","black"), would produce the symbols you want in base graphics, but do not seem to do so in lattice. I do get sort of what you want by modifying your code pretty radically: xyplot(Abun~Date1|Station, data=Raw, groups = Year, par.settings = list(strip.background = list(col = "transparent")), type="p", pch = rep(21,2), col="black", fill=c("gray","black"), xlab=list("Month",cex=1.5), ylab=list("Abundance",cex=1.5), index.cond=list(c(1,2,3,4)), auto.key = T, layout=c(4,1)) Jim On Tue, Dec 1, 2015 at 5:20 PM, Christine Lee via R-help <r-help@r-project.org> wrote: Dear All, I have an embarssing question, I want to put a black line as a rim on the grey symbol in the xyplot, to no avail. . I thought it was easy, by changing the pch code from 16 to 21. I was surpised that I ran into difficulty. My original script is as follows: library(lattice) xyplot(Abun~Date1|Station, data=Raw, groups = culr, par.settings = list(strip.background = list(col = "transparent"), superpose.symbol = list(cex = rep(2, 2), col=c("grey","black"), pch = rep(16,2))), type="p", xlab=list("Month",cex=1.5), ylab=list("Abundance",cex=1.5), index.cond=list(c(1,2,3,4)), auto.key = T, layout=c(4,1)) I have changed pch number into 21, the symbols did show a black rim, but the filled circle colours became blue and pink, instead of the designated grey and black. This puzzles me. My data is as follows: Raw<-structure(list(Date = structure(c(6L, 7L, 2L, 4L, 12L, 9L, 7L, 2L, 4L, 12L, 6L, 15L, 14L, 3L, 6L, 1L, 16L, 5L, 11L, 8L, 4L, 10L, 13L, 6L, 1L, 16L, 5L, 11L, 8L, 4L, 10L, 13L, 6L, 1L, 16L, 5L, 11L, 8L, 4L, 10L, 13L, 11L, 8L, 4L, 10L, 13L), .Label = c("1/10", "1/11", "11/11", "12/11", "13/10", "19/9", "2/10", "2/11", "20/9", "26/11", "29/10", "29/11", "30/11", "31/10", "4/10", "6/10"), class = "factor"), Year = structure(c(1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L), .Label = c("Y2002", "Y2014"), class = "factor"), Station = structure(c(1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 3L, 3L, 3L, 3L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 4L, 4L, 4L, 4L, 4L), .Label = c("E", "F", "H", "I" ), class = "factor"), Abun = c(3.42, 1.33, 3.67, 3.67, 3.92, 2.17, 2.5, 1.67, 6.33, 0.67, 1, 1, 1.33, 2.08, 0, 0, 0.33, 0.08, 0.08, 0, 0.5, 0.17, 0.67, 0.67, 0, 1, 0.58, 1.5, 2.67, 0.67, 1.33, 3, 0.58, 1.17, 1.25, 0.75, 1.25, 1.75, 0.92, 1.5, 0.83, 0.75, 2.33, 0.67, 1.33, 1.58), Date1 = structure(c(16697, 16710, 16740, 16751, 16768, 16698, 16710, 16740, 16751, 16768, 16697, 16712, 16739, 16750, 16697, 16709, 16714, 16721, 16737, 16741, 16751, 16765, 16769, 16697, 16709, 16714, 16721, 16737, 16741, 16751, 16765, 16769, 16697, 16709, 16714, 16721, 16737, 16741, 16751, 16765, 16769, 16737, 16741, 16751, 16765, 16769 ), class = "Date")), .Names = c("Date", "Year", "Station", "Abun", "Date1"), row.names = c(NA, -46L), class = "data.frame") Can any one help me please? With best regards, Christine ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.