The overpass_center result produced by my "Greater London" query to get centerpoints of ways differed from @bdon's overpass_example output thus:
appearing only in overpass_CENTER_ways:
203708843 HMS Belfast ticket office
306698053 The Cinema Museum
37909715 (relation/177044)
40405915 (relation/177044)
appearing only in overpass_EXAMPLE_ways:
140327400 Egham Museum
149913507 Otford Heritage Centre
187420538 (relation/None)
194923622 Eton Natural History Museum
203708843 HMS Belfast
208429132 Weybridge Library and Elmbridge Museum
246300057 Brooklands Museum
255871351 Quebec House
40405915 British Museum
43917586 Dartford Borough Museum and Library
95809105 Chiltern Open Air Museum
This is primarily because of the difference in search areas ("example" bounding box vs. "center" geocoded area) and the time difference between queries may have had a minor contribution too.
This difference could probably be minimized by using the same bounding box query, however @bdon said his was an arbitrary choice.
Maybe we should look into which museums we really want to include. There may be some that are not in either result.
The overpass_center result produced by my "Greater London" query to get centerpoints of ways differed from @bdon's overpass_example output thus:
This is primarily because of the difference in search areas ("example" bounding box vs. "center" geocoded area) and the time difference between queries may have had a minor contribution too.
This difference could probably be minimized by using the same bounding box query, however @bdon said his was an arbitrary choice.
Maybe we should look into which museums we really want to include. There may be some that are not in either result.
See NOTES.md for more deets.