[Rd] "plot.ts" doesn't respect the value of "pch" (+ blocked from Bugzilla signups)

[David Winsemius]

> On Aug 24, 2016, at 5:59 PM, Gregory Werbin <greg.werbin at libertymail.net> wrote:
> 
> I did a search on Bugzilla for "plot.ts" and didn't find anything on this issue. I tried to sign up for Bugzilla to report it, but my e-mail address didn't pass your "syntax checking" for a legal e-mail address.
> 
> The bug is easily reproducible on my machine as follows:
> 
> ## start
> 
> # generate some data
> y <- arima.sim(list(), 150)
> 
> # this will definitely dispatch to a ".ts" method
> class(y)[1] == 'ts'
> 
> # compare and note that `cex = 0.5` has no effect
> plot(y, type = 'b', pch = 16)
> plot(y, type = 'b', pch = 16, cex = 0.5)
> 
> # it works if `y` is coerced back to a regular vector
> plot(as.numeric(y), type = 'b', pch = 16, cex = 0.5)
> 
> # another way to see the issue
> plot.ts(y, type = 'b', pch = 16, cex = 0.5)
> plot.default(y, type = 'b', pch = 16, cex = 0.5)
> 
> ## end
> 
> Skimming through source code for `plot.ts`, it seems like the `cex` argument is being "eaten" by a `...` somewhere without being properly passed to `plot.default`.

'...' does not "eat" parameters, it passes them on.

Looking at the very top of the body we see this in the definition of the internal `plotts` function:

        cex = par("cex"), lty = par("lty"), lwd = par("lwd"), 
        axes = TRUE, frame.plot = axes, ann = par("ann"), cex.lab = par("cex.lab"), 
        col.lab = par("col.lab"), font.lab = par("font.lab"), 
        cex.axis = par("cex.axis"), col.axis = par("col.axis"), 

And at the end of the body we se the call to plotts (including the "dots")

So I would suggest using par-settings.


par(cex=0.5)
plot(y, type = 'b', pch = 16)


(Question seems more appropriate for r-help.)

-- 
David.
> 
> The output of `R.version` is:
> platform       x86_64-apple-darwin15.5.0
> arch           x86_64
> os             darwin15.5.0
> system         x86_64, darwin15.5.0
> status
> major          3
> minor          3.1
> year           2016
> month          06
> day            21
> svn rev        70800
> language       R
> version.string R version 3.3.1 (2016-06-21)
> nickname       Bug in Your Hair
> 
> Greg
> 
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David Winsemius
Alameda, CA, USA