Notes

• Tiled map of UK (can change background)
• plus county boundaries
• Clustered pins (using leaflet library), zoom in on click
• Red pins for Parliamentarian; Blue for Royalist
• Can filter map to show just Parliamentarian / Royalist pins
• On load zooms to bounds of pins (ie focuses on area of interest)
• Don’t display pin if latlng is null or 0,0

Parish boundaries

• 1831Counties shapefile
• Filter for GAZ_CNTY = YORKSHIRE, NORTH RIDING
• Save selected features as new geojson file (1043 features; 3.6MB)
• Dissolve features with same parish name and save as geojson (199 features; 2MB)
• Simplify 20% on mapshaper.org and save as geojson (199 features; 450kb)
• Save as topojson which reduces filesize, & thus load time, even further (199 features; 100kb)

Payments data

• CSV from export listing all payments
• Filter for person_location_county = yorkshire, north riding
• Calculate allegiance based on payment date (<1660 = Parliamentarian; >1660 = Royalist)
• Save CSV with fields as listed below
• Export contains latlng but not name of this place

Field	Example	Note
id	1	row number; just for internal reference
allegiance	Parliamentarian	used for pin colours
person	Abraham Barringham of Marrick, North Riding of Yorkshire	used for pop-up
parish	MARRICK	used for pop-up
latlng	54.3794,-1.88327