A few months ago I realised you have to use Cython to calc pairwise dists for big data in Python, so I wrote my own:https://github.com/oliviaguest/pdist …
Oh, you working on mapping data too? Cool! Also need some more coffee here too. 

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Yep - mapping space-time structures. Perfect task for a dreary Saturday morning

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Well this code is hella fast if you are using great circle distance
End of conversation
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