{"action":"created","issue":{"url":"https://api.github.com/repos/proj4-bot/proj.4/issues/7","labels_url":"https://api.github.com/repos/proj4-bot/proj.4/issues/7/labels{/name}","comments_url":"https://api.github.com/repos/proj4-bot/proj.4/issues/7/comments","events_url":"https://api.github.com/repos/proj4-bot/proj.4/issues/7/events","html_url":"https://github.com/proj4-bot/proj.4/issues/7","id":79100281,"number":7,"title":"Dutch Coordinate System Not Working","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/bug","name":"bug","color":"fc2929"},{"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/P:%20major","name":"P: major","color":"f6f6f6"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":2,"created_at":"2015-05-21T17:55:23Z","updated_at":"2015-05-21T17:55:29Z","closed_at":null,"body":"**Reported by lxnyce on 18 Jul 2008 14:59 UTC**\nPlease see this bug for an overview : http://trac.osgeo.org/gdal/ticket/2487\r\n\r\nWe are contacting customer about getting the prj generated by ESRI. I'll repost the basic problem though. From a customer :\r\n\r\nJust so we know what we are talking about: the Dutch coordinate system is Rijksdriehoeksstelsel. Luckily that is commonly abbreviated to RD.\r\n\r\nMost of that is just parameters, and we can fill them out basically. But what is fundamentally lacking is the actual projection formula used in that coordinate system. Its the Double Stereographic projection, used worldwide only in NL and on Nova Scotia. It is different from the regular stereographic projection, one that is supported.\r\n\r\nPlease find enclosed two point shapefiles, depicting the same points. One is in RD, the other one is in geographic coordinates on the WGS84 datum. Please also find enclosed a PDF (published by the Dutch Cadastre, the owners of the coordinate system) describing the specs of the coordinate system (chapter 4.2.1 for latlong  X, Y, and 4.2.2 for X, Y  latlong) \n\nMigrated-From: https://trac.osgeo.org/proj/ticket/7"},"comment":{"url":"https://api.github.com/repos/proj4-bot/proj.4/issues/comments/104371411","html_url":"https://github.com/proj4-bot/proj.4/issues/7#issuecomment-104371411","issue_url":"https://api.github.com/repos/proj4-bot/proj.4/issues/7","id":104371411,"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},"created_at":"2015-05-21T17:55:29Z","updated_at":"2015-05-21T17:55:29Z","body":"**Comment by janh on 2 Dec 2008 11:41 UTC**\nThis ticket can be closed. The parameters as given by Bart give a correct projection within 20 cm of the official transformation (http://www.rdnap.nl/download/setup%20cc41.exe). Attached a map with deviations between this proj transformation and the official one for 425 core measurement points (https://rdinfo.kadaster.nl/rd/kernnet_meter.xls), and the official \"error map\", showing the measurement errors of the Dutch grid (http://www.rdnap.nl/download/coor-en-proj.zip, p. 45, in Dutch). Both maps are nearly identical."}}