This page used to be home to an interactive map showing points of interest along the line between All Saints' Church in Blackheath and The Octagon at Queen Mary, University of London (I refer to this line as the Prime Axis). I created the map in March 2006 using the Google Maps Javascript API V1 and modified it in September 2006 to use V2. In March 2011 I noticed that V2 had been deprecated so I sat down to rewrite it again to use V3. In V2 I had been reading data from an XML file using GXmlHttp but that method was dropped in V3 so I had to think again. I decided to put my data in a KML file so that I could display it on the map using the KmlLayer() constructor but then realised that once I had a KML file I no longer needed to use the Maps API, I could just send the KML to Google Maps. This is a much more versatile solution because KML is an international standard and the file can be displayed not only on Google Maps, but also in Google Earth and other viewers.
Meanwhile I had become interested in a second alignment, mentioned by Alfred Watkins in his classic work "The Old Straight Track". This alignment of churches along the Strand (referred to as the Strand Ley) is interesting in its own right but what struck me is that it is orthogonal to the Prime Axis. So below is a snapshot of my new KML file displayed on Google Maps, and if you click on the image it will take you to Google Maps where you can zoom in and take a closer look. Enjoy!