jmpearl / gama Goto Github PK

Dear Jason M. Pearl:
I respect this project you've developed. And I have learned about your paper "A fast quadrature-based gravity model for the homogeneous polyhedron". It is a wonderful work.
However, an unexpected Negative Gravity Gradient may appear in the function "gravityGradient" in the catalog src/GravityModels. To avoid confusion, I mean negative gravitational potential, for example, U = -Mu / R, where U is the gravity potential, Mu is the gravity parameter, and R = [X, Y, Z].
I suspect it may originate from an unusual definition of r = x - p which is defined in the aforementioned paper.
I offer my suggestions for you to look over and refer to. And I hope I don't bother you.
Best Wishes.