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MathGroup Archive 1998

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Re: Beginner's clothoid

Hans van Maanen wrote:

> I need to draw a clothoid, aka as Euler's spiral.
> The equations are something like this ...
> x = Integrate[Cos[s^2],s]
> y = Integrate[Sin[s^2],s]

You need to use ParametricPlot:

(the use of N below might speed things up)

x = Integrate[Cos[s^2],s]//N
y = Integrate[Sin[s^2],s]//N

	1.25331 FresnelC[0.797885 s]

	1.25331 FresnelS[0.797885 s]

ParametricPlot[{x,y},{s,0, 3}];

Allan Hayes
Training and Consulting
Leicester, UK
voice: +44 (0)116 271 4198
fax: +44 (0)116 271 8642

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