https://the-democratika.com/wiki/index.php?action=history&feed=atom&title=Module%3AOrdnance_Survey_coordinates%2Fdata 2026-04-04T21:59:24Z Revision history for this page on the wiki MediaWiki 1.43.0 https://the-democratika.com/wiki/index.php?title=Module:Ordnance_Survey_coordinates/data&diff=6773&oldid=prev 2024-11-06T11:07:21Z

<p>fix typo, add url to comments</p> <p><b>New page</b></p><div>-- Data for [[Module:Ordnance Survey coordinates]]<br /> -- You may use and redistribute this data under the terms of the GPL see http://www.gnu.org/copyleft/gpl.html<br /> <br /> local deg2rad = math.rad<br /> <br /> local OSGBglobe = {<br /> semimajor = 6377563.396,<br /> semiminor = 6356256.910,<br /> ecc = 0.006670539761597529073698869358812557054558,<br /> n1 = 0.00167322025032508731869331280635710896296,<br /> scale = 0.9996012717,<br /> e0 = 400000.0,<br /> n0 = -100000.0,<br /> lat0 = 49.0,<br /> lon0 = -2.0<br /> }<br /> <br /> local IEglobe = {<br /> semimajor = 6377340.189,<br /> semiminor = 6356034.447,<br /> ecc = 0.006670540293336110419293763349975612794125,<br /> n1 = 0.001673220384152058651484728058385228837777,<br /> scale = 1.000035,<br /> e0 = 200000.0,<br /> n0 = 250000.0,<br /> lat0 = 53.5,<br /> lon0 = -8.0<br /> }<br /> <br /> local WGSglobe = {<br /> semimajor = 6378137.0,<br /> semiminor = 6356752.3141,<br /> ecc = 0.00669438003551279089034150031998869922791<br /> }<br /> <br /> local WGS2OSGBparam = {<br /> -- Table 4, Section 6.6, Ordnance Survey document https://www.ordnancesurvey.co.uk/documents/resources/guide-coordinate-systems-great-britain.pdf<br /> semimajor_src = WGSglobe.semimajor,<br /> semiminor_src = WGSglobe.semiminor,<br /> ecc_src = WGSglobe.ecc,<br /> semimajor_dst = OSGBglobe.semimajor,<br /> semiminor_dst = OSGBglobe.semiminor,<br /> ecc_dst = OSGBglobe.ecc,<br /> tx = -446.448,<br /> ty = 125.157,<br /> tz = -542.060,<br /> s0 = 0.0000204894,<br /> rx = deg2rad ( -.1502/3600. ),<br /> ry = deg2rad ( -.2470/3600. ),<br /> rz = deg2rad ( -.8421/3600. )<br /> }<br /> <br /> local OSGB2WGSparam = {<br /> semimajor_src = OSGBglobe.semimajor,<br /> semiminor_src = OSGBglobe.semiminor,<br /> ecc_src = OSGBglobe.ecc,<br /> semimajor_dst = WGSglobe.semimajor,<br /> semiminor_dst = WGSglobe.semiminor,<br /> ecc_dst = WGSglobe.ecc,<br /> tx = -WGS2OSGBparam.tx,<br /> ty = -WGS2OSGBparam.ty,<br /> tz = -WGS2OSGBparam.tz,<br /> s0 = -WGS2OSGBparam.s0,<br /> rx = -WGS2OSGBparam.rx,<br /> ry = -WGS2OSGBparam.ry,<br /> rz = -WGS2OSGBparam.rz,<br /> }<br /> <br /> local IE2WGSparam = {<br /> semimajor_src = IEglobe.semimajor,<br /> semiminor_src = IEglobe.semiminor,<br /> ecc_src = IEglobe.ecc,<br /> semimajor_dst = WGSglobe.semimajor,<br /> semiminor_dst = WGSglobe.semiminor,<br /> ecc_dst = WGSglobe.ecc,<br /> tx = 482.53,<br /> ty = -130.596,<br /> tz = 564.557,<br /> s0 = 8.15/1000000.0,<br /> rx = deg2rad( -1.042/3600.0 ),<br /> ry = deg2rad( -0.214/3600.0 ),<br /> rz = deg2rad( -0.631/3600.0 )<br /> }<br /> <br /> return {OSGBglobe=OSGBglobe, IEglobe=IEglobe, WGSglobe=WGSglobe,<br /> WGS2OSGBparam=WGS2OSGBparam, OSGB2WGSparam=OSGB2WGSparam, IE2WGSparam=IE2WGSparam}</div>

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