[racket] Efficiency of tight loops in Racket

I thought I saw somewhere in the Racket documentation a few weeks ago that there is another graphics package in Racket that even has a function to create a binary matrix from a picture.  But when I tried to find it yesterday I couldn't (I don't remember the name or where in the documentation I saw it).  

Does anyone know what package that could be?

Thanks,
Harry





> From: eli at barzilay.org
> Date: Fri, 14 Jan 2011 09:47:24 -0500
> To: vasishtha.spier at gmail.com
> CC: matthias at ccs.neu.edu; users at racket-lang.org; robby at eecs.northwestern.edu; harryspier at hotmail.com
> Subject: Re: [racket] Efficiency of tight loops in Racket
> 
> 12 hours ago, Harry Spier wrote:
> > 2) interface to ImageMagick (which I use to create my binary page
> > representation)
> 
> Note BTW that the ImageMagick interface that comes with racket was
> made as an example for an interface, so it wasn't kept up to date with
> the current API.  (I don't know what changed, but given that a number
> of years have passed, I'm guessing that updates are needed.)
> 
> -- 
>           ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
>                     http://barzilay.org/                   Maze is Life!
 		 	   		  
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