Try this:
library(lattice)
fancy.lm - function(x, y, fit = TRUE, resid = TRUE){
model - lm(y ~ x)
y.pred - predict(model) # Compute residuals for plotting
res.x - as.vector(rbind(x, x, rep(NA,length(x # NAs induce breaks
in line
res.y - as.vector(rbind(y, y.pred, rep(NA,length(x # after Fig
5.1 of DAAG (clever!)
plot(xyplot(y ~ x, pch = 20))
trellis.focus()
if (fit) panel.abline(model, col = red)
if (resid) panel.xyplot(res.x, res.y, col = lightblue, type = l)
trellis.unfocus()
}
x - jitter(c(1:10), factor = 5)
y - jitter(c(1:10), factor = 10)
fancy.lm(x, y, fit = TRUE, resid = TRUE)
On Sun, Jul 20, 2008 at 12:44 PM, Bryan Hanson [EMAIL PROTECTED] wrote:
Hi All...
I can¹t seem to find an answer to this in the help pages, archives, or
Deepayan¹s Lattice Book.
I want to do a Lattice plot, and then update it, possibly more than once,
depending upon some logical options. Code below; it produces a second plot
page when the second update is called, from which I would infer that you
can't update the update or I'm not calling it correctly. I have a nagging
sense too that the real way to do this is with a non-standard use of
panel.superpose but I don't quite see how to do that from available
examples.
TIF for any suggestions, Bryan
Example: a function then, the call to the function
fancy.lm - function(x, y, fit = TRUE, resid = TRUE){
model - lm(y ~ x)
y.pred - predict(model) # Compute residuals for plotting
res.x - as.vector(rbind(x, x, rep(NA,length(x # NAs induce breaks in
line
res.y - as.vector(rbind(y, y.pred, rep(NA,length(x # after Fig 5.1 of
DAAG (clever!)
p - xyplot(y ~ x, pch = 20,
panel = function(...) {
panel.xyplot(...) # not strictly necessary if I understand correctly
})
plot(p, more = TRUE)
if (fit) {
plot(update(p, more = TRUE,
panel = function(...){
panel.xyplot(...)
panel.abline(model, col = red)
}))}
if (resid) {
plot(update(p, more = TRUE,
panel = function(...){
panel.xyplot(res.x, res.y, col = lightblue, type = l)
}))}
}
x - jitter(c(1:10), factor = 5)
y - jitter(c(1:10), factor = 10)
fancy.lm(x, y, fit = TRUE, resid = TRUE)
Session Info
sessionInfo()
R version 2.7.1 (2008-06-23)
i386-apple-darwin8.10.1
locale:
en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] datasets grid grDevices graphics stats utils methods
[8] base
other attached packages:
[1] fastICA_1.1-9 DescribeDisplay_0.1.3 ggplot_0.4.2
[4] RColorBrewer_1.0-2reshape_0.8.0 MASS_7.2-42
[7] pcaPP_1.5 mvtnorm_0.9-0 hints_1.0.1-1
[10] mvoutlier_1.3 robustbase_0.2-8 lattice_0.17-8
[13] rggobi_2.1.9 RGtk2_2.12.5-3
loaded via a namespace (and not attached):
[1] tools_2.7.1
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
