Hi, GROMACS users: I'm trying to calculate the lifetime distribution between pairs of vectors. The problem can be simplified as: there are many vectors in any one frame of a MD trajectory, and when one vector is within a cutoff distance with another vector, and their angle is larger than a cutoff angle, they're deemed as a pair. Some pairs may break and reform in a short time and should be considered something like "interrupted HB" as David van der Spoel has discussed. This is quite like the calculation of hydrogen bond lifetime, but I haven't figured it out. Thank you in advance.
DJ
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