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*To*: List for IMP development <>*Subject*: Re: [IMP-dev] IMP::algebra::get_uniform_cover_rotations_3d*From*: Daniel Russel <>*Date*: Wed, 6 Oct 2010 09:19:14 -0700*Reply-to*: List for IMP development <>

The non-cgal version just chooses points on the upper hemisphere in 4D with uniform probability (since quaternions are sign-invariant). Not sure what you mean by patches. On Oct 6, 2010, at 8:26 AM, Keren Lasker wrote: > thanks Daniel. > you mean that its uniform on patches of the same area on the sphere > right? > in that case it might be ok. > On Oct 6, 2010, at 5:22 PM, Daniel Russel wrote: > >> If you don't have cgal installed, it just takes n random points >> uniformly over the upper half of the 4 sphere.If you have CGAL, it >> smooths them out some. >> >> I'm not sure what you mean by poles (it is uniform over the upper 4- >> sphere). >> >> On Oct 6, 2010, at 6:43 AM, Keren Lasker wrote: >> >>> hi Daniel - >>> >>> Frido and I are using get_uniform_cover_rotations_3d for exhaustive >>> rotational sampling. >>> The code for this function seems to sample random vectors on a 4D >>> sphere. >>> How sensitive is it to poles over sampling? >>> >>> thanks, >>> Keren. >>> _______________________________________________ >>> IMP-dev mailing list >>> >>> https://salilab.org/mailman/listinfo/imp-dev >> >> >> _______________________________________________ >> IMP-dev mailing list >> >> https://salilab.org/mailman/listinfo/imp-dev > > _______________________________________________ > IMP-dev mailing list > > https://salilab.org/mailman/listinfo/imp-dev

**References**:**[IMP-dev] IMP::algebra::get_uniform_cover_rotations_3d***From:*Keren Lasker <>

**Re: [IMP-dev] IMP::algebra::get_uniform_cover_rotations_3d***From:*Daniel Russel <>

**Re: [IMP-dev] IMP::algebra::get_uniform_cover_rotations_3d***From:*Keren Lasker <>

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