{"action":"created","issue":{"url":"https://api.github.com/repos/scikit-image/scikit-image/issues/2250","repository_url":"https://api.github.com/repos/scikit-image/scikit-image","labels_url":"https://api.github.com/repos/scikit-image/scikit-image/issues/2250/labels{/name}","comments_url":"https://api.github.com/repos/scikit-image/scikit-image/issues/2250/comments","events_url":"https://api.github.com/repos/scikit-image/scikit-image/issues/2250/events","html_url":"https://github.com/scikit-image/scikit-image/issues/2250","id":172430878,"number":2250,"title":"filters.frangi fails with default parameters on Py3","user":{"login":"jmetz","id":1950756,"avatar_url":"https://avatars.githubusercontent.com/u/1950756?v=3","gravatar_id":"","url":"https://api.github.com/users/jmetz","html_url":"https://github.com/jmetz","followers_url":"https://api.github.com/users/jmetz/followers","following_url":"https://api.github.com/users/jmetz/following{/other_user}","gists_url":"https://api.github.com/users/jmetz/gists{/gist_id}","starred_url":"https://api.github.com/users/jmetz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jmetz/subscriptions","organizations_url":"https://api.github.com/users/jmetz/orgs","repos_url":"https://api.github.com/users/jmetz/repos","events_url":"https://api.github.com/users/jmetz/events{/privacy}","received_events_url":"https://api.github.com/users/jmetz/received_events","type":"User","site_admin":false},"labels":[{"id":298491430,"url":"https://api.github.com/repos/scikit-image/scikit-image/labels/bug","name":"bug","color":"ea4041","default":true},{"id":233604065,"url":"https://api.github.com/repos/scikit-image/scikit-image/labels/difficulty:%20novice","name":"difficulty: novice","color":"e8c4dc","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":{"url":"https://api.github.com/repos/scikit-image/scikit-image/milestones/6","html_url":"https://github.com/scikit-image/scikit-image/milestone/6","labels_url":"https://api.github.com/repos/scikit-image/scikit-image/milestones/6/labels","id":1467848,"number":6,"title":"0.13","description":"","creator":{"login":"ahojnnes","id":134307,"avatar_url":"https://avatars.githubusercontent.com/u/134307?v=3","gravatar_id":"","url":"https://api.github.com/users/ahojnnes","html_url":"https://github.com/ahojnnes","followers_url":"https://api.github.com/users/ahojnnes/followers","following_url":"https://api.github.com/users/ahojnnes/following{/other_user}","gists_url":"https://api.github.com/users/ahojnnes/gists{/gist_id}","starred_url":"https://api.github.com/users/ahojnnes/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ahojnnes/subscriptions","organizations_url":"https://api.github.com/users/ahojnnes/orgs","repos_url":"https://api.github.com/users/ahojnnes/repos","events_url":"https://api.github.com/users/ahojnnes/events{/privacy}","received_events_url":"https://api.github.com/users/ahojnnes/received_events","type":"User","site_admin":false},"open_issues":15,"closed_issues":67,"state":"open","created_at":"2015-12-19T16:45:03Z","updated_at":"2017-02-06T06:18:48Z","due_on":"2017-01-15T08:00:00Z","closed_at":null},"comments":16,"created_at":"2016-08-22T11:35:11Z","updated_at":"2017-02-06T06:19:39Z","closed_at":null,"body":"When running the documentation example for the Frangi, fails because of default parameters to `frangi` **on Python 3**. Note this is fine on Python 2. \n\n```\nTraceback (most recent call last):\n  File \"sktest.py\", line 15, in <module>\n    ax[1].imshow(frangi(image), cmap=plt.cm.gray)\n  File \"skimage/filters/_frangi.py\", line 119, in frangi\n    beta1, beta2)\n  File \"skimage/filters/_frangi.py\", line 47, in _frangi_hessian_common_filter\n    (Dxx, Dxy, Dyy) = hessian_matrix(image, sigma)\n  File \"skimage/feature/corner.py\", line 154, in hessian_matrix\n    mode=mode, cval=cval)\n  File \"/usr/lib/python3/dist-packages/scipy/ndimage/filters.py\", line 292, in gaussian_filter\n    sigmas = _ni_support._normalize_sequence(sigma, input.ndim)\n  File \"/usr/lib/python3/dist-packages/scipy/ndimage/_ni_support.py\", line 63, in _normalize_sequence\n    normalized = list(input)\nTypeError: 'numpy.int64' object is not iterable\n```\n## Reproducing\n\nCopy and run the official example: http://scikit-image.org/docs/dev/auto_examples/filters/plot_frangi.html\n"},"comment":{"url":"https://api.github.com/repos/scikit-image/scikit-image/issues/comments/277595264","html_url":"https://github.com/scikit-image/scikit-image/issues/2250#issuecomment-277595264","issue_url":"https://api.github.com/repos/scikit-image/scikit-image/issues/2250","id":277595264,"user":{"login":"sciunto","id":335370,"avatar_url":"https://avatars.githubusercontent.com/u/335370?v=3","gravatar_id":"","url":"https://api.github.com/users/sciunto","html_url":"https://github.com/sciunto","followers_url":"https://api.github.com/users/sciunto/followers","following_url":"https://api.github.com/users/sciunto/following{/other_user}","gists_url":"https://api.github.com/users/sciunto/gists{/gist_id}","starred_url":"https://api.github.com/users/sciunto/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sciunto/subscriptions","organizations_url":"https://api.github.com/users/sciunto/orgs","repos_url":"https://api.github.com/users/sciunto/repos","events_url":"https://api.github.com/users/sciunto/events{/privacy}","received_events_url":"https://api.github.com/users/sciunto/received_events","type":"User","site_admin":false},"created_at":"2017-02-06T06:19:39Z","updated_at":"2017-02-06T06:19:39Z","body":"FYI, I reopened #2254 to do that. #2254"}}
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