       Re: Implicit plotting issues

• To: mathgroup at smc.vnet.net
• Subject: [mg82222] Re: Implicit plotting issues
• From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
• Date: Mon, 15 Oct 2007 01:26:40 -0400 (EDT)
• Organization: The Open University, Milton Keynes, UK
• References: <fesqkr\$pcn\$1@smc.vnet.net>

```nateomason at gmail.com wrote:

> So I am plotting an implicit function the that has small y values(0
> to .5) and large x values(0 to 74).
> the graph i get is not readable and i can 't resize it using the edges
> it is lame.
> So does anyone know how to rescale the the implicit plot so that i
> could read it. I have included my code, below. I am using Mathematica
> 5.2

<snip>

Use ContourPlot rather than ImplicitPlot.

<< "Graphics`ImplicitPlot`"
u0 = 76;
\[Omega] = Pi/12;
uh = u0/E^(k*t);
up = 7*(5 - 5/E^(k*t) - (1/(k^2 + \[Omega]^2))*
((2*k*((-k)*Cos[3*\[Omega]] + \[Omega]*Sin[3*\[Omega]] +
E^(k*t)*(k*Cos[(-3 + t)*\[Omega]] +
\[Omega]*Sin[(-3 + t)*\[Omega]])))/E^(k*t)));
myANS = uh + up;
U = myANS;
ContourPlot[U - 30, {t, 0, 72}, {k, 0.2, 0.48}]
Plot3D[U, {t, 0, 72}, {k, 0.2, 0.48}]

Regards,
--
Jean-Marc

```

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