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Re: A question about a sphere

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  • Subject: [mg107122] Re: A question about a sphere
  • From: Peter Pein <petsie at>
  • Date: Wed, 3 Feb 2010 06:11:07 -0500 (EST)
  • References: <hk6cu2$m1a$>

Am 01.02.2010 12:12, schrieb Marwa Abd El-Wahaab:
> Dear Sir,
> I am a Mathematica 7 user.
> I have a question :
> I want to draw a sphere, then draw 5 circles on this sphere like
> *latitudes*and draw 5 lines on this sphere like
> *longitudes*.
> I need your help.
> Thanks in advance
> Marwa Ali



  {Cos[phi] Sin[th],Cos[phi] Cos[th],Sin[phi]},

is the easiest way to do this task. Choose the values for PlotPoints to
your needs (to get a sufficiently smooth surface).

Usually the range [-Pi/2,Pi/2] for phi is sufficient to draw a sphere,
but then - of course - a mesh-line is missing.


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