       Re: boolean variable with contours

• To: mathgroup at smc.vnet.net
• Subject: [mg110676] Re: boolean variable with contours
• From: maria giovanna dainotti <mariagiovannadainotti at yahoo.it>
• Date: Fri, 2 Jul 2010 02:54:37 -0400 (EDT)
• References: <201007011234.IAA18567@smc.vnet.net>

```Dear Math Group,
I have the following problem when I do a contourplot I can't use
the boolean variabile.  This is the function for which I would like
to have the contours

R1=1.029
R2=2.92
R3=20
e1=300
e2=1
e3=100
i=pi/12

ContourPlot[2*R3*Sin[ArcCos[Re[x/R3]]]*e3+2*R2/Cos[i]*Sin[ArcCos[Re[x/2.92]]]*(e2-e3)+2*R1/Cos[i]*Sin[ArcCos[Re[x/R1]]]*(e1-e2),(2*R3*Sin[ArcCos[Re[x/R3]]]*e3+2*R2/Cos[i]*Sin[ArcCos[Re[x/R2]]]*(e2-e3))*(Boole[-R2<x<-R1]+Boole[R2>x>R1]),2*R3*Sin[ArcCos[Re[x/R3]]]*e3*(Boole[x<-R2]+Boole[x>R2])+R3*Cos[ArcSin[y/R3]],{x,-2,2 },{y,-20,20}]

Thanks a lot for your help
Maria

```

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