{"action":"created","comment":{"url":"https://api.github.com/repos/odlgroup/odl/pulls/comments/51535867","id":51535867,"diff_hunk":"@@ -467,30 +449,27 @@ def __init__(self, ip_fspace, grid, dspace, order='C'):\n         fspace : `FunctionSpace`\n             The undiscretized (abstract) space of functions to be\n             discretized. Its field must be the same as that of data\n-            space. Its `FunctionSet.domain` must be an\n-            `IntervalProd`.\n-        grid :  `TensorGrid`\n-            The grid on which to evaluate. Must be contained in\n-            the domain of the function set.\n+            space. The function domain must provide a\n+            ``contains_set`` method such as `IntervalProd` does.\n+        partition : `RectPartition`\n+            Partition of (a subset of) ``fspace.domain`` based on a\n+            `TensorGrid`\n         dspace : `FnBase`\n             Data space providing containers for the values of a\n             discretized object. Its `NtuplesBase.size` must be equal\n             to the total number of grid points, and its `FnBase.field`\n             must be the same as that of the function space.\n         order : {'C', 'F'}, optional\n-            Ordering of the values in the flat data arrays. 'C'\n-            means the first grid axis varies slowest, the last fastest,\n-            'F' vice versa.\n+            Ordering of the axes in the data storage. 'C' means the","path":"odl/discr/discr_mappings.py","position":446,"original_position":446,"commit_id":"6dccc1be26111174315335e4fae960cbb735a1da","original_commit_id":"6dccc1be26111174315335e4fae960cbb735a1da","user":{"login":"adler-j","id":2202312,"avatar_url":"https://avatars.githubusercontent.com/u/2202312?v=3","gravatar_id":"","url":"https://api.github.com/users/adler-j","html_url":"https://github.com/adler-j","followers_url":"https://api.github.com/users/adler-j/followers","following_url":"https://api.github.com/users/adler-j/following{/other_user}","gists_url":"https://api.github.com/users/adler-j/gists{/gist_id}","starred_url":"https://api.github.com/users/adler-j/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/adler-j/subscriptions","organizations_url":"https://api.github.com/users/adler-j/orgs","repos_url":"https://api.github.com/users/adler-j/repos","events_url":"https://api.github.com/users/adler-j/events{/privacy}","received_events_url":"https://api.github.com/users/adler-j/received_events","type":"User","site_admin":false},"body":"default?","created_at":"2016-02-02T08:08:03Z","updated_at":"2016-02-02T08:08:03Z","html_url":"https://github.com/odlgroup/odl/pull/253#discussion_r51535867","pull_request_url":"https://api.github.com/repos/odlgroup/odl/pulls/253","_links":{"self":{"href":"https://api.github.com/repos/odlgroup/odl/pulls/comments/51535867"},"html":{"href":"https://github.com/odlgroup/odl/pull/253#discussion_r51535867"},"pull_request":{"href":"https://api.github.com/repos/odlgroup/odl/pulls/253"}}},"pull_request":{"url":"https://api.github.com/repos/odlgroup/odl/pulls/253","id":57881341,"html_url":"https://github.com/odlgroup/odl/pull/253","diff_url":"https://github.com/odlgroup/odl/pull/253.diff","patch_url":"https://github.com/odlgroup/odl/pull/253.patch","issue_url":"https://api.github.com/repos/odlgroup/odl/issues/253","number":253,"state":"open","locked":false,"title":"Issue 202  partitions","user":{"login":"kohr-h","id":5030250,"avatar_url":"https://avatars.githubusercontent.com/u/5030250?v=3","gravatar_id":"","url":"https://api.github.com/users/kohr-h","html_url":"https://github.com/kohr-h","followers_url":"https://api.github.com/users/kohr-h/followers","following_url":"https://api.github.com/users/kohr-h/following{/other_user}","gists_url":"https://api.github.com/users/kohr-h/gists{/gist_id}","starred_url":"https://api.github.com/users/kohr-h/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kohr-h/subscriptions","organizations_url":"https://api.github.com/users/kohr-h/orgs","repos_url":"https://api.github.com/users/kohr-h/repos","events_url":"https://api.github.com/users/kohr-h/events{/privacy}","received_events_url":"https://api.github.com/users/kohr-h/received_events","type":"User","site_admin":false},"body":"Major PR again, but the main changes are really only a few, and the high number of code changes is due to the grid usage being very widespread across the code.\r\n\r\nHere's what happened:\r\n\r\n- A new `RectPartition` class was added which takes over all functionality connected to partition of sets which grids had to handle partly.\r\n- Grids are stripped down to purely handle their points, no extent, no convex hull etc. Much cleaner.\r\n- No more ordering in grids and partitions, this was shifted to `DiscreteLp` and `FunctionSetMapping` since they are the links between grid points and data storage (see also #249).\r\n- Adaption of inner product, norm and dist in `DiscreteLp` where the \"cropped cells\" at the boundaries have to be accounted for. This currently requires a copy, therefore having nodes at the boundary is not the default. (It is in `RectPartition` but not in `uniform_discr`, we could harmonize that.)\r\n- Done away with some of the LaTeX heavy docstrings plus some more cleanup.\r\n\r\nRemaining TODOs:\r\n- [ ] Fix Py2-related error when copying lists\r\n- [ ] Go through the examples and fix them if necessary.\r\n- [ ] Avoid copy in `_inner` etc. when there are boundary nodes. This requires something smarter than purely relying on the underlying `dspace` implementation, though. Probably a new 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