[R] create function to plot high density data using lattice

[Michael Dewey]

I suspect Luigi that if you wrap the call to xyplot in print(      ) 
matters might be improved.

On 23/04/2015 13:50, Luigi Marongiu wrote:
> Dear all,
> with the most useful help of Duncan I updated a script to plot high
> density data in the form of 384 squares containing tiny plots. The
> function works and it is possible to create a pdf version of the
> output. but when i try to make a function out of this script, the
> resulting pdf file is empty.
> Any tips?
> Thank you and best regards,
> Luigi
>
>
>   >>> here is the example:
>
>
> DF <-  data.frame(Y = rnorm(17280),
>               X = rnorm(1:45),
>               Y2 = rnorm(17280)+2,
>               Z  = 1:384)
> plot.layout <- function(DF) {
>
> # this works from here...
> pdf(
>    file = "TITLE-amp outlook.pdf",
>    width = 15,
>    height = 11,
>    onefile = TRUE,
>    family = "Helvetica",
>    paper = "a4r"
> )
> xyplot(Y ~ X | Z,
>         data = DF,
>         groups = Z,
>         allow.multiple = TRUE,
>         ylab= "Y VALUES",
>         xlab="X VALUES",
>         main="TITLE",
>         scales = list(
>           x = list(draw = FALSE),
>           y = list(draw = FALSE),
>           relation="same",
>           alternating=TRUE),
>         as.table = TRUE,
>         layout = c(24,16),
>         par.settings = list(
>           strip.background=list(col="white"),
>           axis.text = list(cex = 0.6),
>           par.xlab.text = list(cex = 0.75),
>           par.ylab.text = list(cex = 0.75),
>           par.main.text = list(cex = 0.8),
>           superpose.symbol = list(type = "l", cex = 1)
>         ),
>         strip    = FALSE,
>         type = "l",
>         col = 3,
>         panel = panel.superpose
> )
> dev.off()
> #... till here
>
> }
> plot.layout(DF)
>
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> and provide commented, minimal, self-contained, reproducible code.
>

-- 
Michael
http://www.dewey.myzen.co.uk/home.html