Re: [R] pch="." plots much faster

From: Charles Plessy <>
Date: Mon, 19 May 2008 10:26:31 +0900

Le Tue, May 13, 2008 at 01:08:15PM +0100, Prof Brian Ripley a écrit :
> That is a function of your X setup. R does ask for backing store to be
> used, and so it seeems your setup is not doing so. Also, the type="cairo"
> in X11() will repaint from a backing pixmap.

Thanks for the answer.

I have tried to add :
Option "BackingStore" "true"
in /etc/X11/xorg.conf, but it created many display artefacts. I understand why it was not on by default: it seems that not all graphic card drives support the option correctly. In the meantime, I have started to use a R installation that can make cairo graphics and I am very satisfied of it.

(I also have tried to reduce the complexity of my plots, for instance by using the unique() function, that works very well with my highly redundant data).

Have a nice day,

Charles Plessy
Wakō, Saitama, Japan

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Received on Mon 19 May 2008 - 02:55:50 GMT

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