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:
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")
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 <firstname.lastname@example.org> 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",
> ## 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
> Remail@example.com mailing list
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
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