Disappearing x axis in plot.factor (PR#830)

Hi.

While there is an x-axis set up for:

plot.factor(factor(1:3))

this axis is not present for

plot.factor(factor(1:3), col="red")

which actually should just be the same as the first plot and call
barplot(table(.)), shouldn't it?  Where did the ticks and labels go?

Note that

barplot (table(factor(1:3)), col="red")

has the x-axis.

Something funky is going on with axisnames or args in plot.factor that
I can't figure out.  The situation can be remedied with

plot.factor(factor(1:3), col="red", axes=TRUE)

alas, why do you need "axes=TRUE"?

tov@ece.cmu.edu writes:

Something funky is going on with axisnames or args in plot.factor that
I can't figure out.  The situation can be remedied with

plot.factor(factor(1:3), col="red", axes=TRUE)

alas, why do you need "axes=TRUE"?

Because of the logic of

        axisnames <- if (length(dargs <- list(...)) > 0) {
            nam <- names(dargs)
            ((any("axes" == nam) && dargs$axes) || (any("xaxt" == 
                nam) && dargs$xaxt != "n"))
        }

gives FALSE if there are any "..." arguments, and neither of axes= and
xaxt= are given.

I think the first part of plot.factor wants to be 

     if (missing(y) || is.factor(y)) {
	dargs <- list(...)
        axisnames <- if (!is.null(dargs$axes)) dargs$axes
	    else if (!is.null(dargs$xaxt)) dargs$xaxt != "n"
            else TRUE
    }

Anyone know better?