Services & Resources / Wolfram Forums
MathGroup Archive
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2006

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Dot Product in Cylindrical Coordinates

  • To: mathgroup at
  • Subject: [mg69285] Re: Dot Product in Cylindrical Coordinates
  • From: p-valko at
  • Date: Tue, 5 Sep 2006 05:30:58 -0400 (EDT)
  • References: <eddqs4$406$>
  • Sender: owner-wri-mathgroup at

No Hodge star here, but if you mean by dot product the product of their
Cartesian lengths multiplied by the Cos of the angle between them, then

<< "Calculus`VectorAnalysis`"
vcar1=CoordinatesToCartesian[{1, Pi/4, 0},Cylindrical];
vcar2=CoordinatesToCartesian[ {2, 0, 1},Cylindrical];


David Park wrote:
> Sergio,
> I get 2 also, using an independent calculation using differential forms and
> Hodge star.
> I think the Mathematica vector calculus package get confused between the
> points and the tangent vectors.
> David Park
> djmp at
> From: Sergio Miguel Terrazas Porras [mailto:sterraza at]
To: mathgroup at
> Hello group:
> When I calculate the dot product of vectors {1,Pi/4,0} and {2,0,1} in
> Cylindrical Coordinates Mathematica 5.1 returns the result Sqrt[2], when the
> result should be 2.
> What is going on ?
> Thanks
> Sergio Terrazas

  • Prev by Date: RE: Co-Displaying Combinatorica and Graphics Objects
  • Next by Date: Batch evaluation of multiple notebooks?
  • Previous by thread: Re: Dot Product in Cylindrical Coordinates
  • Next by thread: Re: Dot Product in Cylindrical Coordinates