From Ray.Brownrigg@mcs.vuw.ac.nz  Tue Jul  3 21:36:00 2001
From: Ray.Brownrigg@mcs.vuw.ac.nz (Ray.Brownrigg@mcs.vuw.ac.nz)
Date: Tue, 3 Jul 2001 22:36:00 +0200 (MET DST)
Subject: [Rd] plot.mts() with type="p" (PR#1010)
Message-ID: <200107032036.WAA25029@pubhealth.ku.dk>

There appears to be a bug in plot.mts() in R-1.3.0 when attempting to
do a multiple point plot (this worked in 1.2.2).

Reproduce by:
> version
	 _                   
platform sparc-sun-solaris2.8
arch     sparc               
os       solaris2.8          
system   sparc, solaris2.8   
status                       
major    1                   
minor    3.0                 
year     2001                
month    06                  
day      22                  
language R                   
> plot.mts(ts(matrix(runif(10), ncol = 2)), type = "p")
Error in plot.ts(x[, i], axes = FALSE, xlab = "", ylab = "", log = log,  : 
        formal argument "type" matched by multiple actual arguments
> traceback()
3: plot.ts(x[, i], axes = FALSE, xlab = "", ylab = "", log = log, 
       col = col, bg = bg, pch = pch, ann = ann, type = "n", ...)
2: plot(x[, i], axes = FALSE, xlab = "", ylab = "", log = log, col = col, 
       bg = bg, pch = pch, ann = ann, type = "n", ...)
1: plot.mts(ts(matrix(runif(10), ncol = 2)), type = "p")
> 
The problem is that plot.mts calls plot() with an explicit type = "n"
as well as ..., so the type argument is sent twice.

My short-term solution is to change plot.mts() so that:

    for (i in 1:nser) {
        plot(x[, i], axes = FALSE, xlab = "", ylab = "", log = log,
            col = col, bg = bg, pch = pch, ann = ann, type = "n",
            ...)
becomes:

    for (i in 1:nser) {
        plot(x[, i], axes = FALSE, xlab = "", ylab = "", log = log,
            col = 0, bg = bg, pch = pch, ann = ann, 
            ...)

Ray Brownrigg

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[Rd] plot.mts() with type="p" (PR#1010)
Ray.Brownrigg@mcs.vuw.ac.nz