At 22:48 12/10/07, you wrote:
>Hello,
>
>I would like to know if there is a clever way to avoid the problem
>illustrated below within the xyplot function.
>
>x <- seq(1:10)
>y <- seq(1:10)
>pr1 <- xyplot(x ~ y)
>
>u <- seq(1:12)
>v <- seq(1:12)
>pr2 <- xyplot(u ~ v, col = "red", more = FALSE)
>
>prts <- list(pr1, pr2)
>
>for(i in prts) print(i, more = TRUE)
>
>
>I realize that one possibility is to explicitly set the same values for
>xlim and ylim for the plot, but that doesn't work very well for me
>because I am accessing data via a function in a simulation loop in which
>the ylims vary substantially depending on the variable being plotted.
>
>What I would like to be able to do is to access the limits that xyplot
>automatically sets when it initially creates a plot and then use those
>values to estimate a ylim for succeeding rounds of the simulation. For
>instance, if in the first round of a simulation the ylim set by xyplot
>for a variable is c(0,20), I could then use that value as the ylim in
>the following rounds for the same variable (other variables will be
>assigned their limits accordingly). At the end of the program I will
>have plots for 20 or so variables with each plot having several 'lines'
>for each round of the simulation.
>
>In short, is there a way to access the automatically determined ylim?
>
>Kind regards,
>Jeff
>
>______________________________________________
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>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.
Try using the prepanel function (untested for your example)
xyplot(x,y,
prepanel = function(y ...){list(ylim = range(y))}
)
you may have to use pretty to improve the values from the range
Regards
Duncan Mackay
Dept of Agronomy and Soil Science
University of New England
ARMIDALE NSW 2351
Email [EMAIL PROTECTED]
home: [EMAIL PROTECTED]
______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
