{"action":"created","issue":{"url":"https://api.github.com/repos/astropy/astropy/issues/3821","labels_url":"https://api.github.com/repos/astropy/astropy/issues/3821/labels{/name}","comments_url":"https://api.github.com/repos/astropy/astropy/issues/3821/comments","events_url":"https://api.github.com/repos/astropy/astropy/issues/3821/events","html_url":"https://github.com/astropy/astropy/issues/3821","id":85552982,"number":3821,"title":"Warn or Raise Exception when combining Columns with different units","user":{"login":"mhvk","id":2789820,"avatar_url":"https://avatars.githubusercontent.com/u/2789820?v=3","gravatar_id":"","url":"https://api.github.com/users/mhvk","html_url":"https://github.com/mhvk","followers_url":"https://api.github.com/users/mhvk/followers","following_url":"https://api.github.com/users/mhvk/following{/other_user}","gists_url":"https://api.github.com/users/mhvk/gists{/gist_id}","starred_url":"https://api.github.com/users/mhvk/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mhvk/subscriptions","organizations_url":"https://api.github.com/users/mhvk/orgs","repos_url":"https://api.github.com/users/mhvk/repos","events_url":"https://api.github.com/users/mhvk/events{/privacy}","received_events_url":"https://api.github.com/users/mhvk/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/astropy/astropy/labels/Needs-clarification","name":"Needs-clarification","color":"444444"},{"url":"https://api.github.com/repos/astropy/astropy/labels/table","name":"table","color":"c7def8"},{"url":"https://api.github.com/repos/astropy/astropy/labels/units","name":"units","color":"c7def8"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":2,"created_at":"2015-06-05T14:59:56Z","updated_at":"2015-06-05T20:53:47Z","closed_at":null,"body":"While making `Column` behave fully like a `Quantity` would have backwards compatibility issues, it seems wise to warn or even raise an exception if something is done that would be inconsistent with the units (such as adding two columns with different units; unclear how far to take this, though; warn also on `np.sin(col)` when `col.unit = 'deg'`?). See #3820 for more comments."},"comment":{"url":"https://api.github.com/repos/astropy/astropy/issues/comments/109435889","html_url":"https://github.com/astropy/astropy/issues/3821#issuecomment-109435889","issue_url":"https://api.github.com/repos/astropy/astropy/issues/3821","id":109435889,"user":{"login":"embray","id":676149,"avatar_url":"https://avatars.githubusercontent.com/u/676149?v=3","gravatar_id":"","url":"https://api.github.com/users/embray","html_url":"https://github.com/embray","followers_url":"https://api.github.com/users/embray/followers","following_url":"https://api.github.com/users/embray/following{/other_user}","gists_url":"https://api.github.com/users/embray/gists{/gist_id}","starred_url":"https://api.github.com/users/embray/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/embray/subscriptions","organizations_url":"https://api.github.com/users/embray/orgs","repos_url":"https://api.github.com/users/embray/repos","events_url":"https://api.github.com/users/embray/events{/privacy}","received_events_url":"https://api.github.com/users/embray/received_events","type":"User","site_admin":false},"created_at":"2015-06-05T20:53:47Z","updated_at":"2015-06-05T20:53:47Z","body":"BTW I still think it would be cool to allow `column.view(Quantity)` ;)"}}