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Re: lat/lon vs lon/lat ordering of WKT
Posted by: Ulf Küßner
Date: May 18, 2008 03:11AM

Hi Jesse,

looking at the Geographic Coordinate System, you'll notice that longitude counts left to right, while latitude counts bottom to top.
Translating that into x/y this would mean the Longitude/Latitude approach is the only one that makes sense logically.

In english, coordinates are usually referred to as latitude/longitude in a term. This is due to 2 reasons: a precedents o in the alphabet and in Navigation, in the days of sextants Latitude was easier, and more exactly determined, so that was the first thing to determine/write down.

From OGC Specs, lon/lat is the correct way to interpret them. You can easily see that from how those that where participants in creating the Specs (Oracle/Informix/ESRI/IBM) implemented them, and those that did their own stuff (MS/Google).

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Re: lat/lon vs lon/lat ordering of WKT
May 18, 2008 03:11AM

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