[R-SIG-Mac] strange interaction of quartz() with videoprojector
Prof Brian Ripley
ripley at stats.ox.ac.uk
Mon May 5 09:37:50 CEST 2008
You can set the quartz() argument 'dpi'. I'm not sure why this is being
detected wrongly, but it looks as if it is.
On Mon, 5 May 2008, Kenneth Knoblauch wrote:
> The new graphics window defaults in R 2.7.0 are great but I've
> noticed a strange phenomenon when I'm using R with my MacBook Pro
> connected to a videoprojector. Under these conditions,
> the quartz window that is opened is tiny,
> about 1/5 the default size and the line colors are a light
> grey (or a light color, at least. Not 100% sure that it is grey).
This could be the effect of antialiasing on narrow lines.
> As soon as I detach the videoprojector and reset the
> display size, everything returns to normal.
> The minimal example would be to hook up your portable to
> a videoprojector, start R and run
> Does anyone else see this?
> I can get the normal default with
> quartz(width = 30, height = 30)
> but the text and points are very small. I can get around this
> with cex and col arguments but this is not optimal. Not great
> for teaching.
> Thank you for any suggestions. SessionInfo below.
> R version 2.7.0 Patched (2008-04-30 r45572)
> attached base packages:
>  stats graphics grDevices utils datasets methods base
> Ken Knoblauch
> Inserm U846
> Institut Cellule Souche et Cerveau
> Département Neurosciences Intégratives
> 18 avenue du Doyen Lépine
> 69500 Bron
> tel: +33 (0)4 72 91 34 77
> fax: +33 (0)4 72 91 34 61
> portable: +33 (0)6 84 10 64 10
> R-SIG-Mac mailing list
> R-SIG-Mac at stat.math.ethz.ch
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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