{"action":"opened","issue":{"url":"https://api.github.com/repos/proj4-bot/proj.4/issues/62","labels_url":"https://api.github.com/repos/proj4-bot/proj.4/issues/62/labels{/name}","comments_url":"https://api.github.com/repos/proj4-bot/proj.4/issues/62/comments","events_url":"https://api.github.com/repos/proj4-bot/proj.4/issues/62/events","html_url":"https://github.com/proj4-bot/proj.4/issues/62","id":79328654,"number":62,"title":"RSO projection can be handled by improvement to oblique mercator (omerc)","user":{"login":"proj4-bot","id":12542084,"avatar_url":"https://avatars.githubusercontent.com/u/12542084?v=3","gravatar_id":"","url":"https://api.github.com/users/proj4-bot","html_url":"https://github.com/proj4-bot","followers_url":"https://api.github.com/users/proj4-bot/followers","following_url":"https://api.github.com/users/proj4-bot/following{/other_user}","gists_url":"https://api.github.com/users/proj4-bot/gists{/gist_id}","starred_url":"https://api.github.com/users/proj4-bot/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/proj4-bot/subscriptions","organizations_url":"https://api.github.com/users/proj4-bot/orgs","repos_url":"https://api.github.com/users/proj4-bot/repos","events_url":"https://api.github.com/users/proj4-bot/events{/privacy}","received_events_url":"https://api.github.com/users/proj4-bot/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/proj4-bot/proj.4/labels/C:%20default","name":"C: default","color":"0000aa"},{"url":"https://api.github.com/repos/proj4-bot/proj.4/labels/enhancement","name":"enhancement","color":"84b6eb"},{"url":"https://api.github.com/repos/proj4-bot/proj.4/labels/P:%20major","name":"P: major","color":"f6f6f6"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-05-22T07:18:18Z","updated_at":"2015-05-22T07:18:18Z","closed_at":null,"body":"**Reported by cgodkin on 16 Dec 2009 13:15 UTC**\nPlease introduce the \"gamma_c\" parameter to \"omerc\" in the PROJ.4 library.\r\n\r\nThe original discussion of this from long ago starts here:\r\n\r\nhttp://lists.maptools.org/pipermail/proj/2004-January/001025.html\r\n\r\nAt the time I offered a patch which ended up as Bugzilla 461 to provide an alternative to \"omerc\" called \"rso\" since the former was almost but not quite \r\ncorrect for three batches of test points I had.\r\n\r\nAt the time Frank said he'd wait for Gerald to weigh in on the situation\r\nwhich he did (as you could see from the email thread).  Gerald succeeded\r\nto producing the correct results by adding another parameter (which he called \r\n\"gamma_c\") to \"omerc,\" but he did so in his libproj.4 library, not in PROJ.4.\r\n\r\nLooking at Gerald's proj_omerc.c, it appears there's a new \"gamma\" parameter there \r\nalthough it's not called \"gamma_c\" as he discussed in the mail thread at the time.\r\n(I don't mind what it's called as long as I can transform the data points I\r\nhave successfully!)\r\n\r\nThanks very much.\n\nMigrated-From: https://trac.osgeo.org/proj/ticket/62"}}