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Re: Null entry in a Graphics list?

• To: mathgroup at smc.vnet.net
• Subject: [mg51807] Re: [mg51795] Null entry in a Graphics list?
• From: sean kim <sean_incali at yahoo.com>
• Date: Wed, 3 Nov 2004 01:23:19 -0500 (EST)
• Reply-to: sean_incali at yahoo.com
• Sender: owner-wri-mathgroup at wolfram.com

do you mean 

DisplayFunction-> Identity

? 
then to recover it in show. 

DisplayFunction->$DisplayFunction




--- AES/newspost <siegman at stanford.edu> wrote:

> Is there a "Null" or a "None" for Graphics?
> 
> If I want to accomplish something like
> 
>     g1 = Graphics[---];
>     g2 = Graphics[---]
>     g3 = If[test, Graphics[---], NoGraphics ];
>     
>     Show[g1, g2, g3 ];
> 
> is there something I can put in for "NoGraphics"
> (other than an 
> offscreen Point or a zero-size Point or . . . ) that
> will be acceptable 
> in subsequent graphics commands
> 
> 



		
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