Re: Null entry in a Graphics list?
- To: mathgroup at smc.vnet.net
- Subject: [mg51828] Re: [mg51795] Null entry in a Graphics list?
- From: "David Park" <djmp at earthlink.net>
- Date: Wed, 3 Nov 2004 01:24:02 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
g1 = Plot[Sin[x], {x, 0, 8}];
g2 = Plot[Cos[x], {x, 0, 8}];
g3 := If[test, Plot[x^2/64, {x, 0, 8}], Graphics[{}]];
but this also seems to work...
g3 := If[test, Plot[x^2/64, {x, 0, 8}], {}];
test = True;
Show[g1, g2, g3];
test = False;
Show[g1, g2, g3];
David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/
From: AES/newspost [mailto:siegman at stanford.edu]
To: mathgroup at smc.vnet.net
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