R help - Oct 2005 - pdf plotting of splom

Hi,

The following code produces a plot on X11:


splom(~iris[1:4], groups = Species, data = iris,
      panel = panel.superpose,
      key = list(title = "Three Varieties of Iris",
        columns = 3,
        points = list(pch = super.sym$pch[1:3],
          col = super.sym$col[1:3]),
        text = list(c("Setosa", "Versicolor",
"Virginica"))))

However, when I try the same code in a pdf device (whether using 'print'
or not), produces a pdf file with only the layout of all the panels.  The
panels are completely empty.


pdf("splom-test.pdf", family = "Times", bg =
"white")
print(splom(~iris[1:4], groups = Species, data = iris,
      panel = panel.superpose,
      key = list(title = "Three Varieties of Iris",
        columns = 3,
        points = list(pch = super.sym$pch[1:3],
          col = super.sym$col[1:3]),
        text = list(c("Setosa", "Versicolor",
"Virginica")))))
dev.off()

Curiously, some points appear for a split second when opening the file,
but they seem to be replaced by white space immediately, hence the totally
empty panels.

Any pointers as to what might be going on?  I wasn't able to find possible
explanations on the documentation or the archives.


Thanks in advance,

-- 
Sebastian P. Luque

Sebastian Luque <spluque at gmail.com> wrote:

[...]
> pdf("splom-test.pdf", family = "Times", bg =
"white")
[...]

Silly me, it occurred to me to check more carefully that bg argument,
which does something different in xyplot (namely, give a background to the
figure region, not the plot region as it seems to in this case).

So, removing that bg argument was the answer.  Sorry.


Cheers,

-- 
Sebastian P. Luque