{"action":"opened","issue":{"url":"https://api.github.com/repos/v0dro/daru/issues/41","labels_url":"https://api.github.com/repos/v0dro/daru/issues/41/labels{/name}","comments_url":"https://api.github.com/repos/v0dro/daru/issues/41/comments","events_url":"https://api.github.com/repos/v0dro/daru/issues/41/events","html_url":"https://github.com/v0dro/daru/issues/41","id":123743591,"number":41,"title":"DataFrame.from_excel name of first column nil","user":{"login":"jrovegno","id":349866,"avatar_url":"https://avatars.githubusercontent.com/u/349866?v=3","gravatar_id":"","url":"https://api.github.com/users/jrovegno","html_url":"https://github.com/jrovegno","followers_url":"https://api.github.com/users/jrovegno/followers","following_url":"https://api.github.com/users/jrovegno/following{/other_user}","gists_url":"https://api.github.com/users/jrovegno/gists{/gist_id}","starred_url":"https://api.github.com/users/jrovegno/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jrovegno/subscriptions","organizations_url":"https://api.github.com/users/jrovegno/orgs","repos_url":"https://api.github.com/users/jrovegno/repos","events_url":"https://api.github.com/users/jrovegno/events{/privacy}","received_events_url":"https://api.github.com/users/jrovegno/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-12-24T01:26:27Z","updated_at":"2015-12-24T01:26:27Z","closed_at":null,"body":"To replicate the problem:\r\n\r\n    require 'daru'\r\n    # Create DataFrame\r\n    df = Daru::DataFrame.new({\r\n      'col0' => [1,2,3,4,5,6],\r\n      'col2' => ['a','b','c','d','e','f'],\r\n      'col1' => [11,22,33,44,55,66]\r\n      }, \r\n      index: ['one', 'two', 'three', 'four', 'five', 'six'], \r\n      order: ['col0', 'col1', 'col2']\r\n    )\r\n    # Check first column name\r\n    df['col0'].name\r\n    #\"col0\"\r\n    \r\n    # Write an excel with DataFrame\r\n    df.write_excel('df.xls')\r\n    # Create DataFrame drom excel\r\n    df_xls = Daru::DataFrame.from_excel('df.xls')\r\n    \r\n    # Problem check first column name\r\n    df_xls[:col0].name\r\n    # nil\r\n    \r\n    # Other column name and vectors are ok\r\n    df_xls.vectors.to_a\r\n    # [:col0, :col1, :col2]\r\n\r\n"}}