[Rd] par(ask=T) in termplot() (PR#711)
paradis@isem.univ-montp2.fr
paradis@isem.univ-montp2.fr
Fri, 27 Oct 2000 14:48:28 +0200 (MET DST)
At 11:57 25/10/00 +0100, Brian Ripley wrote:
>> Date: mer., 25 oct. 2000 12:38:55 +0200
>> From: Emmanuel Paradis <paradis@isem.univ-montp2.fr>
>
>> I think it would be nice to have par(ask=T) set by default in termplot(),
>> like it is in plot.lm().
>
>Well, it isn't really the default in plot.lm, the default for `ask' being
>
>interactive() && one.fig && length(which) > 1 && .Device != "postscript"
>
>Can you supply us with an appropriate patch for termplot and
>termplot.Rd? The issue is somewhat subtle.
So plot.lm() sets 'ask=F' if, eg, par(mfcol=c(2,1)) so that the first 2
plots cannot be really visualized. Here is a proposed modification for this
function:
$ diff plot.lm.R plot.lm.new.R
7c7
< ask = interactive() && one.fig && length(which) > 1
---
> ask = interactive() && nb.fig < length(which)
52a53
> nb.fig <- prod(par("mfcol"))
The modification for termplot() follows in the same way:
$ diff termplot.R termplot.new.R
3a4,5
> ask = interactive() && nb.fig < n.tms
> && .Device != "postscript",
46a49,55
> nb.fig <- prod(par("mfcol"))
> one.fig <- prod(par("mfcol")) == 1
> if (ask) {
> op <- par(ask = TRUE)
> on.exit(par(op))
> }
> ##---------- Do the individual plots : ----------
I have tested both with R-1.1.1 under WinNT and Solaris2.7, and they seem
to work OK. The corresponding modifications for the .Rd files are:
$ diff plot.lm.Rd plot.lm.new.Rd
11c11
< ask = interactive() && one.fig && length(which) > 1
---
> ask = interactive() && one.fig && nb.fig < length(which)
$ bdiff termplot.Rd termplot.new.Rd
11a12,13
> ask = interactive() && one.fig && nb.fig < length(which)
> && .Device != "postscript",
28a31,32
> \item{ask}{logical; if \code{TRUE}, the user is \emph{ask}ed before
> each plot, see \code{\link{par}(ask=.)}.}
Emmanuel Paradis
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