Text in lattice Graphics outside plot area
On Wednesday 02 March 2005 09:29, Bock, Michael wrote:
I am trying to get the same text printed on each page of a multi-page
series of bar charts. The text need to appear in the upper left-hand
corner of the page, outside of the plot area. A watermark might be
the closest analogy to what I am after
This is what I have so far:
PData <- na.omit(subset(TData,Matrix == "Product"))
barchart(AdjResND0 ~ reorder(Compound, Sort) | Label , PData,
box.ratio = 0.8, ylab= ("Concentration (mg/kg)"),
layout = c(0,1), scales = list(x="free",y="free",rot=90,cex = 0.4,
axs = "i" ), panel=function(x,y,...) {
panel.barchart(x,y,...)
grid.text(label = "Privileged and Confidential \nDRAFT",
x = unit(0.01, "npc"), y = unit(0.95, "npc"))})
This plot a bar chart for each sample, with label representing the
sample ID. I love getting 30 plots with a small among of code! The
problem with this is that the text appears inside the plot area, I
need it outside in the corner of the page.
I think I am close, perhaps if I have the text be in the primary
panel which would be taking up the whole page with the bar chart
inside in a sub panel? An example would be great as I have tried a
number of things and I either get errors or "curious" looking plots.
The option of last resort would be to explicitly plot each sample and
add the text to each plot, but this does not take advantage of the
multi-plot capabilities of lattice graphics.
If I'm not mistaken, you want (conceptually) a label for every page, not
every panel (in your case you have one panel per page, so the
distinction is not as obvious). The correct way to do this would be
through the 'page' argument, not the panel function. e.g.,
barchart(variety ~ yield | site, data = barley,
groups = year, layout = c(3,1),
page = function(n) {
grid.text(label = "Privileged and Confidential \nDRAFT",
x = unit(0.01, "npc"), y = unit(0.95, "npc"),
just = c("left", "center"))
})
HTH,
Deepayan