On Aug 26, 2015, at 8:41 PM, Christine Lee via R-help wrote:
> Dear All,
>
> I have tried to plot graphs of one row of four figures for each station. In
> each graph, black points indicate data in the year of 2002, denoted as Y2002,
> whereas grey points indicate data in the year of 2014, denoted as Y2014. I
> ended up with 2x2 plots with all data points in black. Can anyone find out
> what has gone wrong by any chance please?
>
> 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")
> Raw$Date1<-as.Date(Raw$Date,"%d/%m")
> library(lattice)
> par(mfrow=c(1,4))
> culr<-ifelse(Raw$Year=="Y2002","Black","Grey")
> xyplot(Abun~Date1|Station,Raw,type="p",xlab=list("Month",cex=1.5),ylab=list("Abundance",cex=1.5),cex=2,pch=16,col=culr,strip=strip.custom(bg='white'))
Try putting in a groups argument (after adding the group identifier to the
dataframe:
xyplot(Abun~Date1|Station, groups=culr, col=c("grey","black"),
data=Raw, type="p", xlab=list("Month",cex=1.5),
ylab=list("Abundance",cex=1.5),
cex=2, pch=16, strip=strip. custom(bg='white'))
>
>
> Many thanks.
>
> Regards,
> Christine
>
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David Winsemius
Alameda, CA, USA
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