May 2019
Beginner to intermediate
650 pages
14h 50m
English
Content preview from Learn D3.js
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Drawing geometries as paths
We have already used GeoJSON do draw a world map containing over 200 geometries, but they were all either Polygon or MultiPolygon. Let's try rendering the other types. The simplified GeoJSON file as shown (Data/africa-simple.geojson) contains four different geometry types: MultiPolygon, LineString, MultiLineString and Point, each one inside a separate Feature.
{"type":"FeatureCollection", "features":[ { "type":"Feature", "properties":{}, "geometry":{ "type":"MultiPolygon", "coordinates":[ [[[34,31],...,[34,31]], [[35,-12],...,[35,-12]], [[32,-2],...,[32,-2]], [[29,-4],...,[29,-4]]], [[[44,-25],...,[44,-25]]] ] } },{"type":"Feature", "properties":{ "id":"river1", "name":"Nile" }, "geometry":{ "type":"MultiLineString", ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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