[R] Question: xyplot panel configurations for Trellis package

From: Zheleznyak, Anatoley <Anatoley.Zheleznyak_at_constellation.com>
Date: Fri 27 Oct 2006 - 16:04:29 GMT

I am new to R community and I have a question on panel configurations in the Trellis package.
Particularly, I have the following code:

plotTable <- NULL
Date <- seq(as.Date("2006-11-01"), as.Date("2009-12-01"), by = 1) nYear <- length(unique(format(Date,"%Y"))) plotTable$Date <- as.Date(paste(unique(format(Date, "%Y-%m")), "-01",sep = ""))
nDate <- length(plotTable$Date)
plotTable$Date <- rep(plotTable$Date, each = 10) plotTable$Date <- factor(format(plotTable$Date, "%b-%y"),  

levels=format(as.Date(unique(sort(as.character(plotTable$Date)))), "%b-%y"))
plotTable$x <- rep(seq(1,10,by = 1), nDate) plotTable$y <- rep(seq(1,10,by = 1), nDate)

xyplot(y ~ x| Date, data = plotTable,

      panel=function(x,y){ panel.xyplot(x,y, type = "l", lwd = 3) },
      layout = c(12,nYear),
      main = "Example of the panels by months")

I would be interested to configure panels by years horizontally, so 2006, 2007, 2008, and 2009 all have different rows, and the months will be structured by columns,
Thank you,

Anatoley Zheleznyak
Risk Management Group
Constellation Commodities Group
tel: 410-230-5663

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