{"action":"created","issue":{"url":"https://api.github.com/repos/fiji/fiji/issues/135","repository_url":"https://api.github.com/repos/fiji/fiji","labels_url":"https://api.github.com/repos/fiji/fiji/issues/135/labels{/name}","comments_url":"https://api.github.com/repos/fiji/fiji/issues/135/comments","events_url":"https://api.github.com/repos/fiji/fiji/issues/135/events","html_url":"https://github.com/fiji/fiji/issues/135","id":127180104,"number":135,"title":"Unify matrix libraries","user":{"login":"ctrueden","id":556626,"avatar_url":"https://avatars.githubusercontent.com/u/556626?v=3","gravatar_id":"","url":"https://api.github.com/users/ctrueden","html_url":"https://github.com/ctrueden","followers_url":"https://api.github.com/users/ctrueden/followers","following_url":"https://api.github.com/users/ctrueden/following{/other_user}","gists_url":"https://api.github.com/users/ctrueden/gists{/gist_id}","starred_url":"https://api.github.com/users/ctrueden/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ctrueden/subscriptions","organizations_url":"https://api.github.com/users/ctrueden/orgs","repos_url":"https://api.github.com/users/ctrueden/repos","events_url":"https://api.github.com/users/ctrueden/events{/privacy}","received_events_url":"https://api.github.com/users/ctrueden/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":6,"created_at":"2016-01-18T08:52:54Z","updated_at":"2016-05-03T14:54:55Z","closed_at":null,"body":"Several projects throughout the Fiji stack make use of matrix libraries. Often [JAMA](http://math.nist.gov/javanumerics/jama/) is used. \r\n\r\n@kephale suggested that we could use a more modern library like [ojAlgo](http://ojalgo.org/) or [jblas](http://jblas.org/) or [Vectorz](https://github.com/mikera/vectorz) or [ejml](http://ejml.org/). Or even Clojure's [core.matrix](https://github.com/mikera/core.matrix) as a Java library, which allows switching between backends, though that might have some logistical difficulties.\r\n\r\nIn any case, would be nice to unify the Fiji stack beneath a single approach to matrices. Likely this unification would actually be centered under ImgLib2, and then the Fiji stack would consume that."},"comment":{"url":"https://api.github.com/repos/fiji/fiji/issues/comments/216554516","html_url":"https://github.com/fiji/fiji/issues/135#issuecomment-216554516","issue_url":"https://api.github.com/repos/fiji/fiji/issues/135","id":216554516,"user":{"login":"bogovicj","id":6912043,"avatar_url":"https://avatars.githubusercontent.com/u/6912043?v=3","gravatar_id":"","url":"https://api.github.com/users/bogovicj","html_url":"https://github.com/bogovicj","followers_url":"https://api.github.com/users/bogovicj/followers","following_url":"https://api.github.com/users/bogovicj/following{/other_user}","gists_url":"https://api.github.com/users/bogovicj/gists{/gist_id}","starred_url":"https://api.github.com/users/bogovicj/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bogovicj/subscriptions","organizations_url":"https://api.github.com/users/bogovicj/orgs","repos_url":"https://api.github.com/users/bogovicj/repos","events_url":"https://api.github.com/users/bogovicj/events{/privacy}","received_events_url":"https://api.github.com/users/bogovicj/received_events","type":"User","site_admin":false},"created_at":"2016-05-03T14:54:55Z","updated_at":"2016-05-03T14:54:55Z","body":"Late to the party, but very happy this conversation is happening - of the libraries mentioned, I've used ejml and have been quite happy with it.  \r\n\r\nBut after seeing the performance of ojAlgo linked to by @kephale and @StephanPreibisch, I'm now interested in giving it a try.  If and when I do, I'll weigh back in."}}