[R] Visual stimulus presentation using R?

Spencer Graves spencer.graves at pdf.com
Mon Jun 21 15:44:07 CEST 2004

      Have you considered open source alternatives to Matlab such as 
Scilab?  I know nothing about their capabilities, but Google produced 
2410 hits for "Matlab clones", the first of which 
(http://www.dspguru.com/sw/opendsp/mathclo2.htm) seemed quite useful. 

      hope this helps.  spencer graves

Christoph Lange wrote:

>Dear all!
>Although the Psycho-Toolbox for Matlab is free software, Matlab isn't.
>I'm planning to do an experiment where it's essentail to travel to the
>subjects, not let the subjects come to where the Matlab licences are
>So I need to use a free software for my experiment if I don't want to
>by an extra Matlab licence (which I don't want to).
>Did anyone ever try to do presentation of visual stimuli (images,
>practically, with a little bit of text in my case) with R? I looked
>into the documentation of rgl, but what's lacking there is (as far as
>I saw) the possibility to also read (unbuffered) keyboard input.
>So what I need is:
>  1. put images onto the (full!)screen (qick)
>  2. read keyboard input
>  3. write results (to an R structure, presumably)
>Any idea, suggestion?
>  Christoph.

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