From maechler at stat.math.ethz.ch  Thu Apr 23 16:05:23 2009
From: maechler at stat.math.ethz.ch (maechler at stat.math.ethz.ch)
Date: Thu, 23 Apr 2009 16:05:23 +0200 (CEST)
Subject: [Rd] matplot does not considere the parametre lend (PR#13619)
Message-ID: <20090423140523.C542A283431B@mail.pubhealth.ku.dk>

>>>>> "DM" == Duncan Murdoch <murdoch at stats.uwo.ca>
>>>>>     on Mon, 23 Mar 2009 19:35:15 -0400 writes:

    DM> On 23/03/2009 7:25 PM, cgenolin at u-paris10.fr wrote:
    >> Full_Name: Christophe Genolini
    >> Version: 2.8.1, but also 2.9
    >> OS: Windows XP
    >> Submission from: (NULL) (82.225.59.146)
    >> 
    >> 
    >> I am using matplot with the option lend="butt", but only the first line (the
    >> black) is printed correctly  :
    >> 
    >>> matplot(matrix(1:9,3),type="c",lwd=10,lty=1,lend="butt")

    DM> I'd call this another case where it is performing as documented, but 
    DM> should probably be changed (but not by me).  

I have now added the desired feature to R-devel and 
'R 2.9.0 patched'.

Martin Maechler


    DM> In the meantime, there's  the simple workaround:

    DM> save <- par(lend="butt")
    DM> matplot(matrix(1:9,3),type="c",lwd=10,lty=1)
    DM> par(save)

    DM> Duncan Murdoch

    >> 
    >> Gabor Grothendieck find the problem in matplot code:
    >> the ... is passed to plot (which plots the first series) but not to lines (which
    >> plots the rest):
    >> 
    >> if (!add) {
    >> ii <- ii[-1]
    >> plot(x[, 1], y[, 1], type = type[1], xlab = xlab, ylab = ylab,
    >> xlim = xlim, ylim = ylim, lty = lty[1], lwd = lwd[1],
    >> pch = pch[1], col = col[1], cex = cex[1], bg = bg[1],
    >> ...)
    >> }
    >> for (i in ii) {
    >> lines(x[, i], y[, i], type = type[i], lty = lty[i], lwd = lwd[i],
    >> pch = pch[i], col = col[i], cex = cex[i], bg = bg[i])
    >> }
    >> 
    >> ______________________________________________
    >> R-devel at r-project.org mailing list
    >> https://stat.ethz.ch/mailman/listinfo/r-devel

    DM> ______________________________________________
    DM> R-devel at r-project.org mailing list
    DM> https://stat.ethz.ch/mailman/listinfo/r-devel



[Rd] matplot does not considere the parametre lend (PR#13619)
maechler at stat.math.ethz.ch