Geert-Jan Brits wrote:
> You're most likely talking about something like consine-similarity on
> N-dimensional vectors.
> http://en.wikipedia.org/wiki/Cosine_similarity
> http://stackoverflow.com/search?q=cosine+similarity
>
Cool links ! Although it is not why I need it for. I'm really talking
about an eucledian distance measure between vectors. So in a sense it is
simpler. Normally the gis extensions already provide the basic tools
necessary, if only the points could be extended to more than 2 dimensions.
> You could google to see strategies that exist for mysql.
> However, depending on your use-case (e.g: scalable recommender
> systems) mysql (or any other rdbms) may not be the best tool for the job.
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