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Use of Second Monitor Question

6 messages · Jed Diem, Uwe Ligges, Kjetil Halvorsen +3 more

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In teaching I'd like to be able to display a R-graphics window on a wall 
projection display keeping the R-console on the computer monitor.  And so I 
ask---

Is there a way to move a graphics window out of the Rgui window to a second 
monitor leaving the R Console window in the Rgui window on the first monitor?

Either a Windows or Linux solution would be just fine.


--jed diem
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Jed Diem wrote:
Linux: out of the box,
Windows: Start RGui with option --sdi, or choose SDI mode in the menu 
(Edit - GUI preferences ...).

Uwe Ligges
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On 21 Aug 2003 at 16:51, Uwe Ligges wrote:
Slightly off-topic, but: we are about to buy a data show to put up 
permanent in an aula. All "data shows" I have seen use the monitor 
port directly, so the monitor is blacked out. Is it possible to have 
a set up where I can see both on the monitor and the audience the 
projection? From the answer to this Q, it seems that would work well 
with R. 

Kjetil Halvorsen
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On Thu, 21 Aug 2003 17:55:34 -0400, kjetil brinchmann halvorsen wrote:

            
Most reasonably new laptops allow the display to show in both places.
(There may be limitations on the resolution to accommodate this.)  

The original question was about showing different things on each
monitor:  the console visible to the speaker, and graphics visible to
the audience.  I don't know of any PC laptops that do this, but I
think some Macs can.  At least that was my interpretation of a minor
flap before a presentation at UWO where the projector showed the
desktop and the laptop screen showed the stuff the audience was
supposed to see.

I think to do it on a desktop PC you just need to add an extra video
card.

Duncan Murdoch
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Duncan Murdoch <dmurdoch at pair.com> writes:
Nearly any modern Windows laptop should be able to "dual head" (the
LCD and the display panel/projector, as "adjacent" screens).
PC laptops definitely can, even under XFree86/Linux.  (i.e. have the left
portion of the "display" be on the LCD, the right portion on the
external video-out (connected to a projector/display panel).

It is easier to do this on Mac, of course.

(it's useful for having notes on the LCD, while the presentation is on
the projector, for example).

For desktops, you can use 2 video cards (in which case one would
usually be a PCI-based, and the other AGP, so the quality may be
unequal), but many of the intermediate/expensive video cards ($90US
and up, i.e. Radeon 9000) have dual outputs; for about $130 and up,
you can actually find dual digitial outputs, which are very nice if
you've got digital capable LCD monitors.

(or want to do stereoscopic displays, which is why I care...).

best,
-tony
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On Thu, 21 Aug 2003, Duncan Murdoch wrote:

            
All dual-headed graphics cards can do this: modern Mac laptops have 
Radeons, I believe, and PC laptops with the same hardware can do the same 
things.  My 2002 laptop with a Radeon M graphics card certainly can.