{"action":"opened","issue":{"url":"https://api.github.com/repos/mapbox/tippecanoe/issues/111","labels_url":"https://api.github.com/repos/mapbox/tippecanoe/issues/111/labels{/name}","comments_url":"https://api.github.com/repos/mapbox/tippecanoe/issues/111/comments","events_url":"https://api.github.com/repos/mapbox/tippecanoe/issues/111/events","html_url":"https://github.com/mapbox/tippecanoe/issues/111","id":115048863,"number":111,"title":"Several runs on the same source","user":{"login":"mourner","id":25395,"avatar_url":"https://avatars.githubusercontent.com/u/25395?v=3","gravatar_id":"","url":"https://api.github.com/users/mourner","html_url":"https://github.com/mourner","followers_url":"https://api.github.com/users/mourner/followers","following_url":"https://api.github.com/users/mourner/following{/other_user}","gists_url":"https://api.github.com/users/mourner/gists{/gist_id}","starred_url":"https://api.github.com/users/mourner/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mourner/subscriptions","organizations_url":"https://api.github.com/users/mourner/orgs","repos_url":"https://api.github.com/users/mourner/repos","events_url":"https://api.github.com/users/mourner/events{/privacy}","received_events_url":"https://api.github.com/users/mourner/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/mapbox/tippecanoe/labels/enhancement","name":"enhancement","color":"84b6eb"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-11-04T13:09:47Z","updated_at":"2015-11-04T13:09:47Z","closed_at":null,"body":"We have a use case of generating two separate MBTiles (for z12 and for z15 with different extents) from the same GeoJSON data.\r\n\r\nHow can we avoid duplicating z12 work when doing z15 run? Could we generate some temporary files that we can reuse on the second run?\r\n\r\ncc @ericfischer @MateoV "}}