I'm trying to figure out the latitude and longitude of rail stations that are contained in this WMS feature list. I'm completely new to the GIS field, so please forgive me if I use the wrong terms below. I've done quite a bit of reverse engineering and fiddling to get this far.
The first station has the following location:
<gml:Point srsName="urn:ogc:def:crs:EPSG::27700" srsDimension="2"> <gml:pos>450077 356089</gml:pos> </gml:Point>
After some research, I've concluded this position is relative to offsets and I've used the EPSG site to look up code
27700. This shows me:
Latitude of natural origin: 49° N
Longitude of natural origin: 2° W
Scale factor at natural origin: 0.9996012717
False easting: 400,000 (metre)
False northing: 100,000 (metre)
I'm guessing the values in my station location have had 400,000 and 100,000 respectively added to them. So if I subtract those values I would get:
But I'm not sure what these values represent. They are minuscule, so they can't be metres from the latitude/logitude point (0,0).
Can anyone point out where I've gone wrong? My goal is to eventually convert this
gml:pos value into latitude and longitude.