Hi all, This is just a random question/idea (I tried googling, but couldn't get an answer quickly): Has anyone written a library to effect linear algebra types and operations through Postgres? E.G., convert a float 2-d array to a matrix, convert a float 1-d array to a vector, multiply them, take the matrix power, calculate eigenvalues, some easy functions for converting tables to matrices, etc. This might be extremely useful to some of the data analysis folks out there--I would have used it a year ago on a project. It seems like a fairly straightforward project, which would consist primarily in hooking up the LAPACK libraries and defining some types and operations. Is there something tricky that I haven't foreseen? If I had the summer free, I would apply for a google summer of code project (hint to the world...).
