On Oct 6, 2010, at 5:56 PM, Gerard Smits wrote:
Hi All,
I am running a scatter plot and trying to add a best fit line. I
use an abline function, but get no line drawn over the points.
xyplot is Lattice
abline is base graphics
I also get no error. I arm using V 2.10.0 on Windows 7.
Here is my code, including the SAS transport file import:
Nope. Read the Posting Guide about attachments to the list. Nice try,
though.
require (foreign)
require (chron)
require (Hmisc)
require (lattice)
clin <- sasxport.get("y:\\temp\\subset.xpt")
attach(clin)
plot.new()
xyplot(jitter(b.lvef)~jitter(log.fgf),
main="Scatter Plot of Baseline Ejection Fraction\nby Log10
FGF-23",
ylim=c(10,90),
ylab="Ejection Fraction", xlab="Log10 FGF-23")
Instead consider:
?panel.lmline
Perhaps (untested in absence of data):
plot.new()
xyplot(jitter(b.lvef)~jitter(log.fgf), panel = function(x, y) {
panel.xyplot(x, y)
panel.lmline(x,y)
},
main="Scatter Plot of Baseline Ejection Fraction\nby Log10
FGF-23",
ylim=c(10,90),
ylab="Ejection Fraction", xlab="Log10 FGF-23")
abline(lm(b.lvef~log.fgf))
Any suggestions appreciated.
Thanks,
Gerard
[[alternative HTML version deleted]]
David Winsemius, MD
West Hartford, CT
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