[R] date format in xyplot

John Kane
Tue, 18 Aug 2015 13:09:12 -0000

Sorry, quick follow-up: is there any chance you used Date rather than Date1 in
the original plot?

John Kane
Kingston ON Canada


> -----Original Message-----
> From: r-help at r-project.org
> Sent: Mon, 17 Aug 2015 21:15:39 -0700
> To: r-help at r-project.org
> Subject: [R] date format in xyplot
>
> To whom it may concern,
>
> I have tried to plot some numbers against time with the time on the
> X-axis shown as "Jan", "Feb", etc.
>
> I used the following commands:
> Raw<-structure(list(Date = structure(c(6L, 7L, 2L, 4L, 12L, 9L, 7L,
> 2L, 4L, 12L), .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 = c(2002L,
> 2002L, 2002L, 2002L, 2002L, 2002L, 2002L, 2002L, 2002L, 2002L
> ), Station = structure(c(1L, 1L, 1L, 1L, 1L, 2L, 2L, 2L, 2L,
> 2L), .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), Date1 >
structure(c(16697,
> 16710, 16740, 16751, 16768, 16698, 16710, 16740, 16751, 16768
> ), class = "Date")), .Names = c("Date",
"Year", "Station", "Abun",
> "Date1"), row.names = c(NA, 10L), class = "data.frame")
>
> Raw$Date1<-as.Date(Raw$Date,"%d/%m")
>
xyplot(Abun~Date1|as.factor(Year),Raw,type="p",xlab=list("Month",cex=1.5),ylab=list("Abundance",cex=1.5),cex=2,pch=c(16,16,21),col=c("Black","Grey","Black"),strip=strip.custom(bg='white'),format="%B-%d")
>
> The date format shown on X-axis was just "10-1",
"10-15"
>
> I should be grateful if any one could help indicating what has gone
> wrong?
>
> Regards,
> Christine
>
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