{"action":"created","issue":{"url":"https://api.github.com/repos/pydata/patsy/issues/26","labels_url":"https://api.github.com/repos/pydata/patsy/issues/26/labels{/name}","comments_url":"https://api.github.com/repos/pydata/patsy/issues/26/comments","events_url":"https://api.github.com/repos/pydata/patsy/issues/26/events","html_url":"https://github.com/pydata/patsy/issues/26","id":20579910,"number":26,"title":"Make DesignMatrixBuilders pickleable and saveable","user":{"login":"njsmith","id":609896,"avatar_url":"https://avatars.githubusercontent.com/u/609896?v=3","gravatar_id":"","url":"https://api.github.com/users/njsmith","html_url":"https://github.com/njsmith","followers_url":"https://api.github.com/users/njsmith/followers","following_url":"https://api.github.com/users/njsmith/following{/other_user}","gists_url":"https://api.github.com/users/njsmith/gists{/gist_id}","starred_url":"https://api.github.com/users/njsmith/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/njsmith/subscriptions","organizations_url":"https://api.github.com/users/njsmith/orgs","repos_url":"https://api.github.com/users/njsmith/repos","events_url":"https://api.github.com/users/njsmith/events{/privacy}","received_events_url":"https://api.github.com/users/njsmith/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":5,"created_at":"2013-10-06T13:35:29Z","updated_at":"2015-05-21T02:52:29Z","closed_at":null,"body":"Use cases:\r\n* It should be possible to pickle a `DesignMatrixBuilder` (and/or `DesignInfo`, same issue)\r\n* Checking if two designs are the same: this comes up for rERPy -- it's only valid to form a grand average across multiple analyses if the underlying regressions were the same. In particular it would be good to be able to check for subtle gotchas like use of `center(...)` with different means across the different analyses.\r\n\r\nThe easy part of this is reviewing the inner structure of `DesignMatrixBuilder` (column builders and all that) to make sure it's sensible, and similarly for factor state dicts.\r\n\r\nThe more complicated part is capturing the evaluation environment in a reasonable way.\r\n\r\nPrecondition: #25"},"comment":{"url":"https://api.github.com/repos/pydata/patsy/issues/comments/104108807","html_url":"https://github.com/pydata/patsy/issues/26#issuecomment-104108807","issue_url":"https://api.github.com/repos/pydata/patsy/issues/26","id":104108807,"user":{"login":"chrish42","id":632858,"avatar_url":"https://avatars.githubusercontent.com/u/632858?v=3","gravatar_id":"","url":"https://api.github.com/users/chrish42","html_url":"https://github.com/chrish42","followers_url":"https://api.github.com/users/chrish42/followers","following_url":"https://api.github.com/users/chrish42/following{/other_user}","gists_url":"https://api.github.com/users/chrish42/gists{/gist_id}","starred_url":"https://api.github.com/users/chrish42/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/chrish42/subscriptions","organizations_url":"https://api.github.com/users/chrish42/orgs","repos_url":"https://api.github.com/users/chrish42/repos","events_url":"https://api.github.com/users/chrish42/events{/privacy}","received_events_url":"https://api.github.com/users/chrish42/received_events","type":"User","site_admin":false},"created_at":"2015-05-21T02:52:29Z","updated_at":"2015-05-21T02:52:29Z","body":"Created pull request #67 to work on this."}}