{"action":"created","issue":{"url":"https://api.github.com/repos/tbeu/fmi-standard/issues/258","repository_url":"https://api.github.com/repos/tbeu/fmi-standard","labels_url":"https://api.github.com/repos/tbeu/fmi-standard/issues/258/labels{/name}","comments_url":"https://api.github.com/repos/tbeu/fmi-standard/issues/258/comments","events_url":"https://api.github.com/repos/tbeu/fmi-standard/issues/258/events","html_url":"https://github.com/tbeu/fmi-standard/issues/258","id":358295673,"node_id":"MDU6SXNzdWUzNTgyOTU2NzM=","number":258,"title":"Clarification of InitialUnknowns","user":{"login":"modelica-trac-importer","id":22202507,"node_id":"MDQ6VXNlcjIyMjAyNTA3","avatar_url":"https://avatars1.githubusercontent.com/u/22202507?v=4","gravatar_id":"","url":"https://api.github.com/users/modelica-trac-importer","html_url":"https://github.com/modelica-trac-importer","followers_url":"https://api.github.com/users/modelica-trac-importer/followers","following_url":"https://api.github.com/users/modelica-trac-importer/following{/other_user}","gists_url":"https://api.github.com/users/modelica-trac-importer/gists{/gist_id}","starred_url":"https://api.github.com/users/modelica-trac-importer/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/modelica-trac-importer/subscriptions","organizations_url":"https://api.github.com/users/modelica-trac-importer/orgs","repos_url":"https://api.github.com/users/modelica-trac-importer/repos","events_url":"https://api.github.com/users/modelica-trac-importer/events{/privacy}","received_events_url":"https://api.github.com/users/modelica-trac-importer/received_events","type":"User","site_admin":false},"labels":[{"id":1049839766,"node_id":"MDU6TGFiZWwxMDQ5ODM5NzY2","url":"https://api.github.com/repos/tbeu/fmi-standard/labels/P:%20minor","name":"P: minor","color":"dcffff","default":false},{"id":1049834783,"node_id":"MDU6TGFiZWwxMDQ5ODM0Nzgz","url":"https://api.github.com/repos/tbeu/fmi-standard/labels/bug","name":"bug","color":"d73a4a","default":true},{"id":1049838915,"node_id":"MDU6TGFiZWwxMDQ5ODM4OTE1","url":"https://api.github.com/repos/tbeu/fmi-standard/labels/specification","name":"specification","color":"0000aa","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":{"url":"https://api.github.com/repos/tbeu/fmi-standard/milestones/11","html_url":"https://github.com/tbeu/fmi-standard/milestone/11","labels_url":"https://api.github.com/repos/tbeu/fmi-standard/milestones/11/labels","id":3634966,"node_id":"MDk6TWlsZXN0b25lMzYzNDk2Ng==","number":11,"title":"FMI 2.0","description":"","creator":{"login":"modelica-trac-importer","id":22202507,"node_id":"MDQ6VXNlcjIyMjAyNTA3","avatar_url":"https://avatars1.githubusercontent.com/u/22202507?v=4","gravatar_id":"","url":"https://api.github.com/users/modelica-trac-importer","html_url":"https://github.com/modelica-trac-importer","followers_url":"https://api.github.com/users/modelica-trac-importer/followers","following_url":"https://api.github.com/users/modelica-trac-importer/following{/other_user}","gists_url":"https://api.github.com/users/modelica-trac-importer/gists{/gist_id}","starred_url":"https://api.github.com/users/modelica-trac-importer/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/modelica-trac-importer/subscriptions","organizations_url":"https://api.github.com/users/modelica-trac-importer/orgs","repos_url":"https://api.github.com/users/modelica-trac-importer/repos","events_url":"https://api.github.com/users/modelica-trac-importer/events{/privacy}","received_events_url":"https://api.github.com/users/modelica-trac-importer/received_events","type":"User","site_admin":false},"open_issues":2,"closed_issues":176,"state":"closed","created_at":"2018-09-08T08:37:16Z","updated_at":"2018-09-08T13:33:55Z","due_on":"2012-12-17T08:00:00Z","closed_at":"2018-09-08T08:37:16Z"},"comments":6,"created_at":"2018-09-08T13:32:14Z","updated_at":"2018-09-08T13:34:16Z","closed_at":null,"author_association":"COLLABORATOR","body":"**Reported by awittkop on 5 Jul 2014 19:04 UTC**\nThe definition on pg. 57 states that 'InitialUnknwons' is an ordered list \nof all exposed Unknowns in initialization mode. \nI just want to be clear that this includes continuous values that have \ninitial=\"approx\", e.g. for an FMU that solves a DAE problem and internally \nuses projection.\n\nIn contrast, on pg. 75 it is described that the inputs to f[init]() are\nthe InitialUnknowns. Should that read 'outputs'?\n\nNote in the chart on pg. 102 it is stated that in initialization mode,\nonly causality=\"output\" values also present in the InitialUnknowns can \nbe use in a Get. Why is this restriction necessary?\n\n----\n\nMigrated-From: https://trac.fmi-standard.org/ticket/258"},"comment":{"url":"https://api.github.com/repos/tbeu/fmi-standard/issues/comments/419642456","html_url":"https://github.com/tbeu/fmi-standard/issues/258#issuecomment-419642456","issue_url":"https://api.github.com/repos/tbeu/fmi-standard/issues/258","id":419642456,"node_id":"MDEyOklzc3VlQ29tbWVudDQxOTY0MjQ1Ng==","user":{"login":"modelica-trac-importer","id":22202507,"node_id":"MDQ6VXNlcjIyMjAyNTA3","avatar_url":"https://avatars1.githubusercontent.com/u/22202507?v=4","gravatar_id":"","url":"https://api.github.com/users/modelica-trac-importer","html_url":"https://github.com/modelica-trac-importer","followers_url":"https://api.github.com/users/modelica-trac-importer/followers","following_url":"https://api.github.com/users/modelica-trac-importer/following{/other_user}","gists_url":"https://api.github.com/users/modelica-trac-importer/gists{/gist_id}","starred_url":"https://api.github.com/users/modelica-trac-importer/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/modelica-trac-importer/subscriptions","organizations_url":"https://api.github.com/users/modelica-trac-importer/orgs","repos_url":"https://api.github.com/users/modelica-trac-importer/repos","events_url":"https://api.github.com/users/modelica-trac-importer/events{/privacy}","received_events_url":"https://api.github.com/users/modelica-trac-importer/received_events","type":"User","site_admin":false},"created_at":"2018-09-08T13:34:16Z","updated_at":"2018-09-08T13:34:16Z","author_association":"COLLABORATOR","body":"**Comment by otter on 9 Jul 2014 10:33 UTC**\nIn the specification included the following text at the place where InitialUnknowns is defined (and a shortened version of this text as comment in the fmi2ModelDescription.xsd file):\n\n  Ordered list of all exposed Unknowns in Initialization Mode. This list must include at least all variables that are used as Knowns in the other modes, so variables with\n\n 1. variability = \"output\" and (initial=\"approx\" or \"calculated\"),\n 2. variability = \"calculatedParameter\", and\n 3. for ModelExchange, continuous-time states with initial = (\"approx\" or \"calculated\")\n\n This list may optionally include:\n\n 4. variables with initial = \"approx\" [_(this is recommended in order that the environment can monitor FMU internal iteration variables of algebraic loops)_] and\n 5. variables with initial = \"calculated\" [_(such as state derivatives in steady state case computed as dx/dt=0)_].\n\n The resulting list is not allowed to have duplicates (e.g. if a state is also an output, it is included only once in the list)."}}
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