Grasshopper

generative modeling for Rhino

Writing cos-1,tan-1,etc in a GH Expression?

Hi All

 

How do i write forumula's like the ones below in GH as the Expression editor does not like the -1 outside brackets. Maths below converts from cartesian coordinates(x, y, z) into spherical coordinates (r, θ, φ)

 

r=\sqrt{x^2+y^2+z^2}
\theta=\cos^{-1} \left( \frac{z}{r}\right)
\varphi = \tan^{-1} \left( \frac{y}{x} \right)

Thanks
Matt

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Replies to This Discussion

Permalink Reply by Danny Boyes on June 20, 2011 at 6:34am
The components ArcCos, ArcSin, and ArcTan if using native GH components and Asin, Acos and Atan if using inside an expresion
Permalink Reply by Chris Tietjen on June 20, 2011 at 6:46am

(x^2+y^2+z^2)^1/2

Acos(z/r)

Atan(y/x)

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