I don’t see why the gradient with respect to x0 ever changes, and so am confused about why it would ever stop increasing in the x0 direction.
Looks like the splotch functions are each a random mixture of sinusoids in each direction—so each splotchj will have some variation along x0. The argument of splotchj is all of x, not just xj.
Looks like the splotch functions are each a random mixture of sinusoids in each direction—so each splotchj will have some variation along x0. The argument of splotchj is all of x, not just xj.
Ah, that’d do it too.