[R] help with the "pch" option in plot.locfit

[Shige Song]

Dear All,

I am trying to plot a smoothed hazard funciton using the LOCFIT library.
Suppose my locfit model is "loc.fit", my plot command looks like this:

plot(loc.rw, lty="solid", pch=1, xlab="Age at Risk",
ylab="Hazard Rate", ylim=c(0, .5), lwd=2)

What's interesting is that whichever number I used in the "pch=" option,
I still get a line without any symbles. Is this something about the LOCFIT
library or I did something wrong?

I have four lines in my graph, without differetn symbles on different
lines,  it can be difficult to read.

Any help will be greatly appreciated.

Best,
Shige Song
Department of Sociology, UCLA

-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._