From murdoch.duncan at gmail.com  Thu Mar 15 19:34:30 2012
From: murdoch.duncan at gmail.com (Duncan Murdoch)
Date: Thu, 15 Mar 2012 14:34:30 -0400
Subject: [Rd] windows() device: plot does not refresh with new drawing
 after opening and closing a new device
In-Reply-To: <CAAcGz99QV+=YuovgMbjDd5vrXh6L-djf05Uj+H0e2BkGZnkncA@mail.gmail.com>
References: <CAAcGz99QV+=YuovgMbjDd5vrXh6L-djf05Uj+H0e2BkGZnkncA@mail.gmail.com>
Message-ID: <4F623636.9090603@gmail.com>

On 15/03/2012 2:29 AM, Michael Sumner wrote:
> Hello,
>
> I see this problem in 2.14.1, a recent dev, and 2.15.0 alpha, but not
> in an older build.
>
> Start the R windows console and run this code:
>
> plot(1:10);windows();dev.off();points(10:1)
>
> The second set of points does not show up until the window is
> minimized and restored.
>
> If the device is replaced with a file-based one (pdf, png) there's no problem.

The problem is caused by events happening asynchronously:  the first 
device is made active before the second one is closed, and closing the 
second one cancels the pending updates.  We should be able to get it 
fixed before 2.15.0; in the meantime, a workaround is to call 
dev.flush(), e.g.

plot(1:10);windows();dev.off();points(10:1);dev.flush()

should be fine.

Duncan Murdoch

> I see this behaviour on these versions:
>
>    R version 2.15.0 alpha (2012-03-13 r58726)
>    Platform: x86_64-pc-mingw32/x64 (64-bit)
>
>    R Under development (unstable) (2012-02-28 r58513)
>    Platform: x86_64-pc-mingw32/x64 (64-bit)
>
>    R version 2.14.1 (2011-12-22)
>    Platform: x86_64-pc-mingw32/x64 (64-bit)
>
> I have an old beta install of 2.13.2 where the problem does not occur:
>
>    R version 2.13.2 beta (2011-09-22 r57035)
>    Platform: x86_64-pc-mingw32/x64 (64-bit)
>
> Cheers, Mike.
>
>



[Rd] windows() device: plot does not refresh with new drawing after opening and closing a new device
Duncan Murdoch