On Dec 20, 2010, at 5:36 AM, Andre Nathan wrote:
Hello
I'm using the following call to create a contourplot:
library(lattice)
m <- as.matrix(read.table("data.txt"))
contourplot(m[,3] ~ m[,2] * -m[,1],
at = c(1e-6, 1e-5, 1e-4, 1e-3, 1e-2, 1e-1),
scales = list(x = list(log = 10,
labels = c("1", "10", "100"),
at = c(1, 10, 100)),
y = list(labels = c("14", "12", "10", "8",
"6", "4", "2")),
at = c(-14, -12, -10, -8, -6, -4,
-2)),
labels = c(expression(10^-6), expression(10^-5),
expression(10^-4), expression(10^-3),
expression(10^-2), expression(10^-1),
expression(10^0)),
xlim = c(0.75, 10^2),
xlab = "Out-degree", ylab = "In-degree")
Which gives the the output in the file below
http://ompldr.org/vNm4xag/contour.eps
As it can be seen, the level labels are not displayed nicely because
there's not enough room for them. Also, the 10^-1 label is not
displayed.
Is there a way for me to hardcode the position of each label?
I don't see it, but that doesn't mean much unless it is echoed by
Sarkar or Andrews.
I tried
setting labels = F and then calling text() for each one, but that
doesn't work.
Right, text() is a base graphics function. There are, however, lattice
functions that supply the same functionality:
?ltext # = l(attice)text
ltext(x, y = NULL, labels = seq_along(x), col, alpha, cex, srt = 0,
lineheight, font, fontfamily, fontface, adj = c(0.5, 0.5), pos = NULL,
offset = 0.5, ...)
You could first see if you can better results by not automatically
labeling the 10^-6 level, because the -2, -3, -5 levels look ok. That
might let the 10^-4 label move to a bit less hashed up position and
then you could put 10^-1 and 10^-6 where you want them
If that's not possible, one option would be to color each level line
differently and then add a legend. Is it possible to do that?
Finally, how can I remove the tick marks from the top and right axes?
..., scales=list(tck=c(1,0)), ... actually you would add the tck
list to your existing scales. Found on the ?xyplot page, but tested
with a modified volcano example from :
?contourplot
Thanks,
Andre
David Winsemius, MD
West Hartford, CT
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
