{"id":"https://data.mapsnap.org/runs/v2.0/iiif/chronoscope/sanborn05980_005.keymap.iiif.json","type":"AnnotationPage","@context":["http://www.w3.org/ns/anno.jsonld"],"label":"Hempstead, New-York | 1909 | 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:gmd380m:g3804m:g3804hm:g3804hm_g059801909:05980_1909-0000__2/georef","type":"Annotation","@context":["http://iiif.io/api/extension/georef/1/context.json","http://iiif.io/api/presentation/3/context.json"],"label":"Hempstead, New-York | 1909 | sanborn05980_005 p0 [2]","metadata":[{"label":"streets","value":"81"},{"label":"intersections","value":"136"},{"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":"2026-10-19T22:32:02Z","modified":"2026-10-19T22:32:02Z","motivation":"georeferencing","target":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804hm:g3804hm_g059801909:05980_1909-0000__2/selector","type":"SpecificResource","source":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804hm:g3804hm_g059801909:05980_1909-0000","type":"ImageService3","width":1613,"height":1913},"selector":{"type":"SvgSelector","value":"<svg><polygon points=\"1159.9,0.0 0.0,0.0 0.0,1401.9 945.6,1401.9 950.1,1913 1613,1913 1613,229.2 1613,226.8 1613,178.3 1613,0.0 1533.9,0.0 1449.2,0.0 1372.0,0.0 1296.0,0.0 1211.6,0.0 1159.9,0.0\" /></svg>"}},"body":{"id":"https://cdn.chronoscope.io/mapsnap/service:gmd:gmd380m:g3804m:g3804hm:g3804hm_g059801909:05980_1909-0000__2/gcps","type":"FeatureCollection","transformation":{"type":"helmert"},"features":[{"type":"Feature","properties":{"resourceCoords":[862.5,799.0],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.6177567,40.7044181]}},{"type":"Feature","properties":{"resourceCoords":[890.5,344.6],"type":"gcp"},"geometry":{"type":"Point","coordinates":[-73.6208805,40.7136793]}}]}}]}