Dear R-experts,
I have two problems:
PROBLEM (1)
-----------
I want to produce a very small png file (35 x 18 px) that contains a
histogram without a figure region or margins, only the pure heights.
In the base graphic system this is simple:
png(filename = "hist.png", res = 72, width=35, height=18)
par(mar=c(0,0,0,0), oma=c(0,0,0,0))
hist(rnorm(100), main="")
dev.off()
Now I want a grid graphics output as I need the graphic as an object.
I tried several trellis.par settings but I was not able to figure it out
(PROBLEM (1)).
Up to now it looks like this:
library(lattice)
histogram(rnorm(100), xlab="", ylab="",
par.settings=list(
axis.line=list(col="transparent"),
xlab.text=list(col="transparent"),
ylab.text=list(col="transparent"),
axis.text=list(col="transparent"))
)
This looks acceptable although I would like smaller margins, that is to say
no margins at all. How cab I achieve that?
PROBLEM (2)
-----------
Now is, that when it is printed to the png file, the graphic almost consist
of margins only. The main part of the plot shrinks to some tiny points.
I don't know how to change the settings, so I that I get the same as in the
base system.
Does anyone know?
TIA
Mark
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