30:[{"id":"6b1776f5a0a0e76e6428805c0074a8f262e3f34b1b50944da27903e014b409958dc29b03a1c9cc331949d6a2a404c19dfd0d9d36d9c32274e6ffbc07c11350ee","href":"https://static.observableusercontent.com/files/6b1776f5a0a0e76e6428805c0074a8f262e3f34b1b50944da27903e014b409958dc29b03a1c9cc331949d6a2a404c19dfd0d9d36d9c32274e6ffbc07c11350ee","name":"counties-albers-10m.json","type":"application/octet-stream","lastModified":1572391534231.175,"size":795407}] 2e:{"title":"U.S. Map","cells":[{"id":0,"value":"# U.S. Map\n\nThis map comes pre-projected in U.S. Albers (a [conic equal-area](/@d3/conic-equal-area) projection) from the [TopoJSON U.S. Atlas](https://github.com/topojson/us-atlas) for fast rendering. To [overlay data on the map](/@d3/u-s-state-capitals), use the projection `d3.geoAlbersUsa().scale(1300).translate([487.5, 305])`, which is configured for a 975x610 viewport. See also a variant of this projection that [includes Puerto Rico](/@d3/u-s-map-with-puerto-rico).","pinned":false,"hidden":false,"mode":"md"},{"id":29,"value":"","pinned":true,"hidden":false,"mode":"html"},{"id":110,"value":"path = d3.geoPath()","pinned":true,"hidden":false,"mode":"ojs"},{"id":13,"value":"us = FileAttachment(\"counties-albers-10m.json\").json()","pinned":true,"hidden":false,"mode":"ojs"}],"files":"$W30","stdlib":"1","titling":"auto"}