Hi,
likely it's not the most elegant way, but it's straight-forward and the
first which popped in my mind:
a <- rnorm(100)
# either
boxplot(a, col="white", border="white")
my.grid <- seq(-4, 4, 0.5)
abline(h=my.grid, col="grey", lty=2)
boxplot(a, col="red", add = TRUE)
# or
boxplot(a, col="white", border="white")
grid(ny=5)
boxplot(a, col="red", add = TRUE)
Ciao,
Carlo Giovanni Camarda
===========================================
Camarda Carlo Giovanni
PhD-Student
Max Planck Institute for Demographic Research
Konrad-Zuse-Strasse 1
18057 Rostock, Germany
Tel: +49 (0)381 2081 172
Fax: +49 (0)381 2081 472
[EMAIL PROTECTED]
===========================================
I am using R 2.2.1 on a Windows 2000 PC.
When I do a grid() after the boxplot
it overprints the boxplot:
> boxplot(count ~ spray, data = InsectSprays, col = "lightgray")
> grid(nx=NA, ny=NULL)
>
if I try the panel.first
> boxplot(count ~ spray, data = InsectSprays, col = "lightgray",
+ panel.first=grid(nx=NA, ny=NULL))
>
I can see the grid flash and go away.
If I close the device and then try the panel.first,
I do not get a boxplot and the following error message:
> boxplot(count ~ spray, data = InsectSprays, col = "lightgray",
+ panel.first=grid(nx=NA, ny=NULL))
Error in abline(h = at, col = col, lty = lty, lwd = lwd) :
plot.new has not been called yet
>
Same thing when I try pdf device:
> pdf("test.pdf")
> boxplot(count ~ spray, data = InsectSprays, col = "lightgray",
+ panel.first=grid(nx=NA, ny=NULL))
Error in abline(h = at, col = col, lty = lty, lwd = lwd) :
plot.new has not been called yet
> dev.off()
null device
1
How can I get the grid behind the boxplot?
Thank you,
Toby Popenfoose
Donnelley Manufacturing Supervisor
[EMAIL PROTECTED]
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