Dutch Coordinate System Not Working

[osgeo]

Dutch Coordinate System Not Working

[proj4-bot]

Comment by bart on 29 Oct 2008 13:51 UTC
In my opinion, PROJ.4 does support the RDNAP projection. The parameters i use are:

proj=sterea lat_0=52.15616055555555 lon_0=5.38763888888889 k=0.9999079 x_0=155000 y_0=463000 towgs84=565.040,49.910,465.840,-0.40939,0.35971,-1.86849,4.0772 ellps=bessel

First time i discussed this ith Frank the 7 parameter datum transformation was not working correctly but i think starting version 4.6 this works pretty well.

Last check i did was today, compared it with the results from MapInfo 9.0 difference was less the 1 meter !

Replying to lxnyce:

Please see this bug for an overview : http://trac.osgeo.org/gdal/ticket/2487

We are contacting customer about getting the prj generated by ESRI. I'll repost the basic problem though. From a customer :

Just so we know what we are talking about: the Dutch coordinate system is Rijksdriehoeksstelsel. Luckily that is commonly abbreviated to RD.

Most 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.

Please 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)

[proj4-bot]

Comment by janh on 2 Dec 2008 11:41 UTC
This 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.

[proj4-bot]

Comment by warmerdam on 1 Mar 2010 02:41 UTC
Closing based on Jan's advice.

[proj4-bot]

Attachment added by lxnyce on 18 Jul 2008 14:59 UTC
https://trac.osgeo.org/proj/attachment/ticket/7/Sampledataset.zip

[proj4-bot]

Attachment added by janh on 2 Dec 2008 11:36 UTC
https://trac.osgeo.org/proj/attachment/ticket/7/rd_wgs84_proj_deviations.gif

[proj4-bot]

Attachment added by janh on 2 Dec 2008 11:36 UTC
https://trac.osgeo.org/proj/attachment/ticket/7/rd_wgs84_proj_deviations.2.gif

[proj4-bot]

Attachment added by janh on 2 Dec 2008 11:36 UTC
https://trac.osgeo.org/proj/attachment/ticket/7/rd_wgs84_errors.gif.gif