{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn00643_001.main.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Lockeford, California | 1884 | mapsnap generated fit (2026-10-22)","creator":{"type":"Software","name":"mapsnap","homepage":"https://mapsnap.org"},"rights":"https://opendatacommons.org/licenses/odbl/1-0/","metadata":[{"label":"generated","value":"2026-10-22"},{"label":"run","value":"corpus-v2.1"},{"label":"pages","value":"3"},{"label":"placed","value":"1"},{"label":"unplaced","value":"2"},{"label":"fit sources","value":"georef 1"},{"label":"key map","value":"none"},{"label":"split sheets","value":"1 sheet(s) cut into 3 panels"},{"label":"unplaced pages","value":"p1__2 (tier 1, 38.16489,-121.14884 +/-100m); p1__3 (tier 4, 38.16274,-121.15017 +/-100m)"}],"items":[{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g006431884:00643_1884-0001__1/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Lockeford, California | 1884 | sanborn00643_001 p1 [1]","metadata":[{"label":"streets","value":"5"},{"label":"intersections","value":"3"},{"label":"confidence","value":"0.67"},{"label":"confidence_provisional","value":"true"},{"label":"confidence_model","value":"corpus-v2"},{"label":"split_canvas_x","value":"0.0"},{"label":"split_canvas_y","value":"0.0"},{"label":"split_canvas_w","value":"6452.0"},{"label":"split_canvas_h","value":"7652.0"}],"created":"2026-10-22T13:44:15Z","modified":"2026-10-22T13:44:15Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g006431884:00643_1884-0001__1/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g006431884:00643_1884-0001","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1198.0,1733.9 1250.5,1490.3 1250.5,1489.3 1250.7,1489.3 1250.8,1488.8 1567.3,1439.6 1574.0,841.9 1113.9,811.8 1099.4,292.5 958.9,89.4 844.8,75.4 695.5,166.4 122.5,142.8 53.9,558.8 108.7,1776.2 418.4,1876.7 1124.3,1794.8 1198.0,1733.9\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd436m:g4364m:g4364lm:g4364lm_g006431884:00643_1884-0001__1/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[1021.0,159.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.148431,38.16343]}},{"type":"Feature","properties":{"resourceCoords":[109.0,159.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-121.1498625,38.1646934]}}]}}]}