>
> David,
> thank you for your reply
>
> I tried this
> attach(mtcars)
> interaction.plot(cyl, gear, mpg, type="o", pch=5:8, lty=1 )
>
> but I got this error:
> Error in match.arg(type) : 'arg' should be one of "l", "p", "b"
>
> and in ?interaction.plot, "o" it is not listed in type arguments.
> Is there any other way to force it to take the argument?
As David suggested you need to change code for interaction.plot. If you
write
interaction.plot
you will get the code
> interaction.plot
function (x.factor, trace.factor, response, fun = mean, type = c("l",
"p", "b"), legend = TRUE, trace.label =
deparse(substitute(trace.factor)),
fixed = FALSE, xlab = deparse(substitute(x.factor)), ylab = ylabel,
ylim = range(cells, na.rm = TRUE), lty = nc:1, col = 1, pch = c(1L:9,
0, letters), xpd = NULL, leg.bg = par("bg"), leg.bty = "n",
xtick = FALSE, xaxt = par("xaxt"), axes = TRUE, ...)
{.......
Copy it into some suitable text editor (not Word please) and change it
according to your wish. I would start with adding "o" to type in function
definition and see how it behaves. Then you can copy the whole code to
your modified function e.g.
my.int.plot <- function(x,....
and call
my.int.plot(cyl, gear, mpg, type="o", pch=5:8, lty=1 )
Regards
Petr
>
> Thanks
> Claudio
>
> On Thu, Sep 29, 2011 at 9:00 PM, David Winsemius
<dwinsem...@comcast.net>wrote:
>
> >
> > On Sep 29, 2011, at 7:22 PM, Heverkuhn Heverkuhn wrote:
> >
> > Hello,
> >> I was wondering if there is any equivalent of interaction.plot that
allow
> >> you to set type="o"
> >> I tried to use interaction.plot and I have a gap between the symbols
of
> >> the
> >> points and the line.
> >>
> >>
> > If it's OK to have the lines going right though the symbols, then go
ahead,
> > hack the code. All you need to do is add ,"o" to the type arguments in
the
> > argument list. The code's not hidden or anything that gets in your
way.
> >
> >
> > David Winsemius, MD
> > West Hartford, CT
> >
> >
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> 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.
______________________________________________
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.
