function grid = interp_slice_to_grid(slice, xg, yg)
%INTERP_SLICE_TO_GRID  Interpolate scattered slice data onto regular grid.
[Xg, Yg] = meshgrid(xg, yg);
F = scatteredInterpolant(slice.x, slice.y, slice.val, 'linear', 'none');
Zg = F(Xg, Yg);
grid.X = Xg;
grid.Y = Yg;
grid.Z = Zg;
end