{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn09010_001.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Danville, Virginia | 1886 | key map | mapsnap generated fit (2026-10-19)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-19"},{"label":"run","value":"corpus-v2"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101886:09010_1886-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Danville, Virginia | 1886 | sanborn09010_001 p1 [1]","metadata":[{"label":"streets","value":"28"},{"label":"intersections","value":"59"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6878.4"},{"label":"split_canvas_h","value":"8074.1"}],"created":"2026-10-19T22:12:28Z","modified":"2026-10-19T22:12:28Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101886:09010_1886-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101886:09010_1886-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"0.0,1913 1613,1913 1613,330.4 1608.2,313.9 1555.3,298.8 1508.8,285.6 1466.7,273.6 1380.6,249.2 1352.6,241.2 1261.3,215.2 1131.6,178.3 1069.7,160.7 1132.5,166.9 1138.8,87.3 1141.5,0.0 0.0,0.0 0.0,1913\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd388m:g3884m:g3884dm:g3884dm_g090101886:09010_1886-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[885.1,973.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.391619,36.587988]}},{"type":"Feature","properties":{"resourceCoords":[1340.5,1115.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-79.388583,36.583592]}}]}}]}