[pstricks] Three dimensional SpecialCoor?

[Herbert Voss]

In-Sung Cho schrieb:
> It does not seem to work to write (!0 0 2 sqrt) to express the
> 3-dimensional point (0,0,\sqrt{2}).
>
> Do we have a 3-dimensional "SpecialCoor" function or any equivalents
> in pstricks?
>   
try (0,0,2 sqrt)

Herbert