Hi:
See below.
On Wed, Oct 6, 2010 at 2:56 PM, Gerard Smits <g_sm...@verizon.net> 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. 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:
>
> 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")
>
> abline(lm(b.lvef~log.fgf))
>
> Try this:
xyplot(jitter(b.lvef)~jitter(log.fgf), type = c('p', 'r'),
main="Scatter Plot of Baseline Ejection Fraction\nby Log10 FGF-23",
ylim=c(10,90),
ylab="Ejection Fraction", xlab="Log10 FGF-23")
Type 'p' plots the points, 'r' the least-squares regression line. The set of
allowable types is found on p. 75 of the Lattice book.
HTH,
Dennis
Any suggestions appreciated.
>
> Thanks,
>
> Gerard
>
>
>
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>
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