On 31 Oct 2017, at 17:16, Nisa Amir <nisaamir@math.qau.edu.pk> wrote:

Yes exactly, I want to add a space time non kerr to Einstein Exact thorn, but as you have already said, it considers only cartesian coordinates. What should I do ?

(Please include users@einsteintoolkit.org in CC, so that other benefit from the discussion)

Hi,

I'm afraid I still don't understand which of the two options you want.  Do you want to perform the evolution in polar or Cartesian coordinates?

-- 
Ian Hinder