[R] bug checking

[Gabor Grothendieck]

Yes, its a bug.  The calls to axis.times in plot.times use the same
col variable as the points do.  This shows it more compactly:

library(chron)
x <- seq.dates(from="09/30/2005", len = 10)
plot(x, 1:10, col = "red")

A workaround would be to plot the X axis separately:

plot(x, 1:10, col = "red", xaxt = "n")
axis.times(1, x)

or use plot.Date:

library(zoo)  # needed for as.Date.numeric
plot(as.Date(as.numeric(x)), 1:length(x), col = "red")



On 10/12/05, Parlamis Franklin <fparlamis at mac.com> wrote:
> ## Code was long, so I simplified it by creating vectors from scratch
> so it would run as is.  Putative "bug" is still evidenced on the x axis
>
> discount.factors.dates <- seq.dates(from="09/30/2005", to="09/30/2035")
> rates<-seq(4.4, 5.2, by=0.0025);
> plot(discount.factors.dates[1:length(rates)], rates,
>      pch=18, las=1, bty="n",
>      col="red", col.main="red",
>      xlab="Date", ylab="Rate",
>      ylim=c(min(rates)-(max(rates)-min(rates))/10,max(rates)+(max
> (rates)-min(rates))/10))
>
> ## This is the output:
>
>
>
>
> ## Hopefully you all see the red x axis.
>
> ## I am running R Cocoa GUI 1.1.2 with R 2.1.1 framework on a dual
> proc 2.7 Ghz Power Mac.  A Quartz device is opened when 'plot' is
> called.  X11User and X11SDK are installed on t he computer, as well
> as xCode 2.1 (in case that's relevant).
>
>
> On Oct 11, 2005, at 4:47 PM, Marc Schwartz wrote:
>
> > On Tue, 2005-10-11 at 16:07 -1000, Parlamis Franklin wrote:
> >
> >> I have observed the following behavior, wondering if it is a bug
> >> before I submit a report.
> >>
> >> I am using the plot function with call:  plot(X, Y,
> >> col="red", . . . ) where X is an object that inherits from classes
> >> 'dates' and 'times' (created with the 'dates' function from package
> >> 'chron') and y is a numeric vector.  The color red is applied to the
> >> area from the first to the last tick mark on the x axis (even if I
> >> don't set col="red" and only set, say col.main="red").
> >>
> >> If instead of feeding the function X, I feed it unclass(X) or
> >> as.vector(X) the red color is not applied to the area between the
> >> first and last ticks on the x axis.
> >>
> >> Is this a bug, or just a consequence of there not being a plot method
> >> for the class I am trying to feed the function?
> >>
> >> Franklin Parlamis
> >>
> >
> > As per the Posting Guide, it would be immensely helpful in the attempt
> > to help you, if you would provide the exact code you are using and
> > some
> > sample data here, so that we can exactly replicate what you are
> > experiencing.
> >
> > Lacking that, it would be difficult to assist as we can only guess. It
> > does sound like there is an _appropriate_ change in the plot method
> > behavior as a direct consequence of your modifying the class of the
> > argument(s), which is of course how methods are dispatched. Thus, if I
> > were to guess, this is not a bug.
> >
> > I would however, certainly recommend that you submit an example
> > here to
> > confirm the behavior, before you post a bug report, as that would
> > avoid
> > a more energetic response.
> >
> > Marc Schwartz
> >
> >
> >
>
>
>
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