{"action":"created","issue":{"url":"https://api.github.com/repos/nilearn/nilearn/issues/938","labels_url":"https://api.github.com/repos/nilearn/nilearn/issues/938/labels{/name}","comments_url":"https://api.github.com/repos/nilearn/nilearn/issues/938/comments","events_url":"https://api.github.com/repos/nilearn/nilearn/issues/938/events","html_url":"https://github.com/nilearn/nilearn/issues/938","id":126002420,"number":938,"title":"Region Extractor fails to converge in some cases","user":{"login":"bthirion","id":234454,"avatar_url":"https://avatars.githubusercontent.com/u/234454?v=3","gravatar_id":"","url":"https://api.github.com/users/bthirion","html_url":"https://github.com/bthirion","followers_url":"https://api.github.com/users/bthirion/followers","following_url":"https://api.github.com/users/bthirion/following{/other_user}","gists_url":"https://api.github.com/users/bthirion/gists{/gist_id}","starred_url":"https://api.github.com/users/bthirion/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bthirion/subscriptions","organizations_url":"https://api.github.com/users/bthirion/orgs","repos_url":"https://api.github.com/users/bthirion/repos","events_url":"https://api.github.com/users/bthirion/events{/privacy}","received_events_url":"https://api.github.com/users/bthirion/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/nilearn/nilearn/labels/Bug","name":"Bug","color":"e11d21"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":5,"created_at":"2016-01-11T18:05:13Z","updated_at":"2016-01-11T19:46:53Z","closed_at":null,"body":"The following code yields does not  converge on my box:\r\n```\r\nfrom nilearn import datasets\r\nfrom nilearn.regions import RegionExtractor\r\nlocalizer_dataset = datasets.fetch_localizer_contrasts(\r\n    [\"checkerboard\", \"horizontal checkerboard\", \"vertical checkerboard\"],\r\n    n_subjects=1, get_tmaps=True, get_masks=True)\r\nextraction = RegionExtractor(localizer_dataset.tmaps, min_region_size=100,\r\n                             threshold=98, thresholding_strategy='percentile')\r\nextraction.fit()\r\n```\r\nDoes somebody understand what's going on ?"},"comment":{"url":"https://api.github.com/repos/nilearn/nilearn/issues/comments/170668357","html_url":"https://github.com/nilearn/nilearn/issues/938#issuecomment-170668357","issue_url":"https://api.github.com/repos/nilearn/nilearn/issues/938","id":170668357,"user":{"login":"KamalakerDadi","id":11410385,"avatar_url":"https://avatars.githubusercontent.com/u/11410385?v=3","gravatar_id":"","url":"https://api.github.com/users/KamalakerDadi","html_url":"https://github.com/KamalakerDadi","followers_url":"https://api.github.com/users/KamalakerDadi/followers","following_url":"https://api.github.com/users/KamalakerDadi/following{/other_user}","gists_url":"https://api.github.com/users/KamalakerDadi/gists{/gist_id}","starred_url":"https://api.github.com/users/KamalakerDadi/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/KamalakerDadi/subscriptions","organizations_url":"https://api.github.com/users/KamalakerDadi/orgs","repos_url":"https://api.github.com/users/KamalakerDadi/repos","events_url":"https://api.github.com/users/KamalakerDadi/events{/privacy}","received_events_url":"https://api.github.com/users/KamalakerDadi/received_events","type":"User","site_admin":false},"created_at":"2016-01-11T19:46:53Z","updated_at":"2016-01-11T19:46:53Z","body":"> I've tried with images from one contrast across subjects (also with NaNs) and did not get the problem.\r\n\r\nJust curious, which contrast ?"}}