{"action":"created","issue":{"url":"https://api.github.com/repos/JuliaDiffEq/DiffEqOperators.jl/issues/58","repository_url":"https://api.github.com/repos/JuliaDiffEq/DiffEqOperators.jl","labels_url":"https://api.github.com/repos/JuliaDiffEq/DiffEqOperators.jl/issues/58/labels{/name}","comments_url":"https://api.github.com/repos/JuliaDiffEq/DiffEqOperators.jl/issues/58/comments","events_url":"https://api.github.com/repos/JuliaDiffEq/DiffEqOperators.jl/issues/58/events","html_url":"https://github.com/JuliaDiffEq/DiffEqOperators.jl/issues/58","id":304848732,"number":58,"title":"BC when stencil reaches out of grid","user":{"login":"fgerick","id":12558460,"avatar_url":"https://avatars2.githubusercontent.com/u/12558460?v=4","gravatar_id":"","url":"https://api.github.com/users/fgerick","html_url":"https://github.com/fgerick","followers_url":"https://api.github.com/users/fgerick/followers","following_url":"https://api.github.com/users/fgerick/following{/other_user}","gists_url":"https://api.github.com/users/fgerick/gists{/gist_id}","starred_url":"https://api.github.com/users/fgerick/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/fgerick/subscriptions","organizations_url":"https://api.github.com/users/fgerick/orgs","repos_url":"https://api.github.com/users/fgerick/repos","events_url":"https://api.github.com/users/fgerick/events{/privacy}","received_events_url":"https://api.github.com/users/fgerick/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":3,"created_at":"2018-03-13T16:52:20Z","updated_at":"2018-03-13T17:00:38Z","closed_at":null,"author_association":"NONE","body":"Probably somewhere this has already been discussed!? When the stencil length is larger than 3 the stencil coefficients of the boundaries, except for the ``None`` boundary condition, are not calculated correctly. I understand the way BC are imposed is being overhauled, but this seems to me to be decoupled from this issue? When constructing the linear operator, in the new or the old way, the boundary coefficients need to be calculated in the same manner. Please tell me, if I'm missing something. I'd be happy to help implementing the boundary conditions correctly, i.e. taking the stencil length into account and calculating left and right handed coefficients for the \"out of boundary\" points."},"comment":{"url":"https://api.github.com/repos/JuliaDiffEq/DiffEqOperators.jl/issues/comments/372740443","html_url":"https://github.com/JuliaDiffEq/DiffEqOperators.jl/issues/58#issuecomment-372740443","issue_url":"https://api.github.com/repos/JuliaDiffEq/DiffEqOperators.jl/issues/58","id":372740443,"user":{"login":"ChrisRackauckas","id":1814174,"avatar_url":"https://avatars2.githubusercontent.com/u/1814174?v=4","gravatar_id":"","url":"https://api.github.com/users/ChrisRackauckas","html_url":"https://github.com/ChrisRackauckas","followers_url":"https://api.github.com/users/ChrisRackauckas/followers","following_url":"https://api.github.com/users/ChrisRackauckas/following{/other_user}","gists_url":"https://api.github.com/users/ChrisRackauckas/gists{/gist_id}","starred_url":"https://api.github.com/users/ChrisRackauckas/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ChrisRackauckas/subscriptions","organizations_url":"https://api.github.com/users/ChrisRackauckas/orgs","repos_url":"https://api.github.com/users/ChrisRackauckas/repos","events_url":"https://api.github.com/users/ChrisRackauckas/events{/privacy}","received_events_url":"https://api.github.com/users/ChrisRackauckas/received_events","type":"User","site_admin":false},"created_at":"2018-03-13T17:00:38Z","updated_at":"2018-03-13T17:00:38Z","author_association":"OWNER","body":"Yes, getting this done would be very helpful. Basically what we to start BC overhaul is to just get very solid the \"BC-less\" operators, i.e. an operator whose stencil is correct (i.e. does this de-centering). "}}
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