{"action":"opened","issue":{"url":"https://api.github.com/repos/nextgis/molusce/issues/9","labels_url":"https://api.github.com/repos/nextgis/molusce/issues/9/labels{/name}","comments_url":"https://api.github.com/repos/nextgis/molusce/issues/9/comments","events_url":"https://api.github.com/repos/nextgis/molusce/issues/9/events","html_url":"https://github.com/nextgis/molusce/issues/9","id":120235418,"number":9,"title":"area changes not calculating","user":{"login":"jrozek","id":16139645,"avatar_url":"https://avatars.githubusercontent.com/u/16139645?v=3","gravatar_id":"","url":"https://api.github.com/users/jrozek","html_url":"https://github.com/jrozek","followers_url":"https://api.github.com/users/jrozek/followers","following_url":"https://api.github.com/users/jrozek/following{/other_user}","gists_url":"https://api.github.com/users/jrozek/gists{/gist_id}","starred_url":"https://api.github.com/users/jrozek/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jrozek/subscriptions","organizations_url":"https://api.github.com/users/jrozek/orgs","repos_url":"https://api.github.com/users/jrozek/repos","events_url":"https://api.github.com/users/jrozek/events{/privacy}","received_events_url":"https://api.github.com/users/jrozek/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-12-03T18:15:02Z","updated_at":"2015-12-03T18:15:02Z","closed_at":null,"body":"I have two urban area maps-1991 and 2006.  The area changes calculates them as having the same land area and there is no change between them.  I have the no data value set at 0 for each one.  What is going wrong?\r\n\r\n\r\n\r\n\r\n"}}