{"action":"opened","issue":{"url":"https://api.github.com/repos/calvinmetcalf/leaflet.shapefile/issues/21","labels_url":"https://api.github.com/repos/calvinmetcalf/leaflet.shapefile/issues/21/labels{/name}","comments_url":"https://api.github.com/repos/calvinmetcalf/leaflet.shapefile/issues/21/comments","events_url":"https://api.github.com/repos/calvinmetcalf/leaflet.shapefile/issues/21/events","html_url":"https://github.com/calvinmetcalf/leaflet.shapefile/issues/21","id":65532403,"number":21,"title":"Proj4js custom projection - wrong transformation parameters used","user":{"login":"imalovic","id":11741323,"avatar_url":"https://avatars.githubusercontent.com/u/11741323?v=3","gravatar_id":"","url":"https://api.github.com/users/imalovic","html_url":"https://github.com/imalovic","followers_url":"https://api.github.com/users/imalovic/followers","following_url":"https://api.github.com/users/imalovic/following{/other_user}","gists_url":"https://api.github.com/users/imalovic/gists{/gist_id}","starred_url":"https://api.github.com/users/imalovic/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/imalovic/subscriptions","organizations_url":"https://api.github.com/users/imalovic/orgs","repos_url":"https://api.github.com/users/imalovic/repos","events_url":"https://api.github.com/users/imalovic/events{/privacy}","received_events_url":"https://api.github.com/users/imalovic/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-03-31T19:52:57Z","updated_at":"2015-03-31T19:52:57Z","closed_at":null,"body":"When defining custom projection and using 7P to define transformation to WGS84, I  have noticed the rotation parameters and scale are being recalculated multiple times to radians/scale, thus when transforming the wrong values are used.\r\nI have hardcoded rotation parameters and scale for my projection in proj4-src.js, and the transformed coordinates are good now. I have checked the transformed coordinates using FME and ILWIS.\r\n\r\nCan someone confirm the same behaviour, or the problem is at my side?"}}