{"action":"opened","issue":{"url":"https://api.github.com/repos/vega/vega/issues/1359","repository_url":"https://api.github.com/repos/vega/vega","labels_url":"https://api.github.com/repos/vega/vega/issues/1359/labels{/name}","comments_url":"https://api.github.com/repos/vega/vega/issues/1359/comments","events_url":"https://api.github.com/repos/vega/vega/issues/1359/events","html_url":"https://github.com/vega/vega/issues/1359","id":340508897,"node_id":"MDU6SXNzdWUzNDA1MDg4OTc=","number":1359,"title":"geoshape transform requires `datum` for the field","user":{"login":"nyurik","id":1641515,"node_id":"MDQ6VXNlcjE2NDE1MTU=","avatar_url":"https://avatars0.githubusercontent.com/u/1641515?v=4","gravatar_id":"","url":"https://api.github.com/users/nyurik","html_url":"https://github.com/nyurik","followers_url":"https://api.github.com/users/nyurik/followers","following_url":"https://api.github.com/users/nyurik/following{/other_user}","gists_url":"https://api.github.com/users/nyurik/gists{/gist_id}","starred_url":"https://api.github.com/users/nyurik/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nyurik/subscriptions","organizations_url":"https://api.github.com/users/nyurik/orgs","repos_url":"https://api.github.com/users/nyurik/repos","events_url":"https://api.github.com/users/nyurik/events{/privacy}","received_events_url":"https://api.github.com/users/nyurik/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-07-12T06:46:05Z","updated_at":"2018-07-12T06:46:05Z","closed_at":null,"author_association":"MEMBER","body":"It seems that the `field` parameter for the `geoshape` transform always requires `\"datum.fieldname\"` instead of just `\"fieldname\"`. Is this by design, and if so, how should this be documented?"}}
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