{"action":"created","issue":{"url":"https://api.github.com/repos/CindyJS/CindyJS/issues/508","repository_url":"https://api.github.com/repos/CindyJS/CindyJS","labels_url":"https://api.github.com/repos/CindyJS/CindyJS/issues/508/labels{/name}","comments_url":"https://api.github.com/repos/CindyJS/CindyJS/issues/508/comments","events_url":"https://api.github.com/repos/CindyJS/CindyJS/issues/508/events","html_url":"https://github.com/CindyJS/CindyJS/issues/508","id":181813514,"number":508,"title":"Coercion of geometric elements in Lists does not work as expected","user":{"login":"kortenkamp","id":1773555,"avatar_url":"https://avatars.githubusercontent.com/u/1773555?v=3","gravatar_id":"","url":"https://api.github.com/users/kortenkamp","html_url":"https://github.com/kortenkamp","followers_url":"https://api.github.com/users/kortenkamp/followers","following_url":"https://api.github.com/users/kortenkamp/following{/other_user}","gists_url":"https://api.github.com/users/kortenkamp/gists{/gist_id}","starred_url":"https://api.github.com/users/kortenkamp/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/kortenkamp/subscriptions","organizations_url":"https://api.github.com/users/kortenkamp/orgs","repos_url":"https://api.github.com/users/kortenkamp/repos","events_url":"https://api.github.com/users/kortenkamp/events{/privacy}","received_events_url":"https://api.github.com/users/kortenkamp/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/CindyJS/CindyJS/labels/Cinderella%20compat.","name":"Cinderella compat.","color":"0052cc"}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":2,"created_at":"2016-10-08T08:39:32Z","updated_at":"2016-10-09T11:46:55Z","closed_at":null,"body":"If you have a list of geometric elements, say, points `[A,B,C,D]`, then you cannot rely on coercion to create coordinates of these. In Cinderella, `sum([A,B,C,D])/4` would be the center of gravity of those points, as this expression is equivalent to `sum([A.xy,B.xy,C.xy,D.xy])/4`."},"comment":{"url":"https://api.github.com/repos/CindyJS/CindyJS/issues/comments/252481919","html_url":"https://github.com/CindyJS/CindyJS/issues/508#issuecomment-252481919","issue_url":"https://api.github.com/repos/CindyJS/CindyJS/issues/508","id":252481919,"user":{"login":"strobelm","id":14185442,"avatar_url":"https://avatars.githubusercontent.com/u/14185442?v=3","gravatar_id":"","url":"https://api.github.com/users/strobelm","html_url":"https://github.com/strobelm","followers_url":"https://api.github.com/users/strobelm/followers","following_url":"https://api.github.com/users/strobelm/following{/other_user}","gists_url":"https://api.github.com/users/strobelm/gists{/gist_id}","starred_url":"https://api.github.com/users/strobelm/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/strobelm/subscriptions","organizations_url":"https://api.github.com/users/strobelm/orgs","repos_url":"https://api.github.com/users/strobelm/repos","events_url":"https://api.github.com/users/strobelm/events{/privacy}","received_events_url":"https://api.github.com/users/strobelm/received_events","type":"User","site_admin":false},"created_at":"2016-10-09T11:46:55Z","updated_at":"2016-10-09T11:46:55Z","body":"Probably it's better to adjust General.add/mult to deal with geoOps\nsince it's called anyway (and for sure used on other occasions).\n\nOn 10/08/2016 09:34 PM, Martin von Gagern wrote:\n> For this specific situation we need a few more |evaluateAndVal| calls\n> here\n> <https://github.com/CindyJS/CindyJS/blob/v0.8.1/src/js/libcs/Operators.js#L886-L888>.\n> But there are likely other source locations affected in a similar manner.\n> \n> I'm removing the /incompatible/ label since I don't see this as a bug\n> which will introduce an incompatibility. I just started a wiki page\n> describing labels <https://github.com/CindyJS/CindyJS/wiki/Labels>, and\n> I'll likely trigger an email discussion about that as well.\n> \n> —\n> You are receiving this because you are subscribed to this thread.\n> Reply to this email directly, view it on GitHub\n> <https://github.com/CindyJS/CindyJS/issues/508#issuecomment-252443831>,\n> or mute the thread\n> <https://github.com/notifications/unsubscribe-auth/ANhz4oIS9IEyIfcGnU2O8gwcWs151raCks5qx_A8gaJpZM4KRqYL>.\n> \n\n\n-- \nMichael Strobel, M.Sc.\n\nTechnische Universität München -- Zentrum Mathematik\nLehrstuhl für Geometrie und Visualisierung (M10)\nBoltzmannstr. 3, 85747 Garching bei München\nhttps://www-m10.ma.tum.de/bin/view/Lehrstuhl/MichaelStrobel\n"}}
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