| license: mit |
A basic map in D3 using some projection from here: https://github.com/d3/d3/blob/master/API.md#geographies-d3-geo
Built with blockbuilder.org
forked from enjalot's block: WWSD #6: d3.js projections
forked from almccon's block: Basic D3 map (Mercator)
forked from almccon's block: Basic D3 map (Mercator) d3v4
forked from almccon's block: Basic D3 map (Robinson) d3v4
forked from almccon's block: Basic D3 map (live mods) d3v4
| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="//d3js.org/d3.v4.js"></script> | |
| <script src="//d3js.org/d3-geo-projection.v2.min.js"></script> | |
| <style> | |
| body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
| svg { width:100%; height: 100% } | |
| </style> | |
| </head> | |
| <body> | |
| <script> | |
| var width = 800; | |
| var height = 500; | |
| var svg = d3.select("body").append("svg") | |
| var projection = d3.geoStereographic() | |
| .scale(width / 2 / Math.PI) | |
| .scale(200) | |
| .translate([width / 2, height / 2]) | |
| var path = d3.geoPath() | |
| .projection(projection); | |
| var url = "http://enjalot.github.io/wwsd/data/world/world-110m.geojson"; | |
| var url2 = "http://enjalot.github.io/wwsd/data/world/ne_50m_populated_places_simple.geojson"; | |
| d3.json(url, function(err, world_geojson) { | |
| d3.json(url2, function(err, places_geojson) { | |
| svg.append("path") | |
| .attr("d", path(world_geojson)) | |
| .attr("fill","lightgray") | |
| svg.selectAll("circle") | |
| .data(places_geojson.features) | |
| .enter() | |
| .append("circle") | |
| .attr("r", function(d) { | |
| console.log(d); | |
| return d.properties.pop_max/1000000; | |
| }) | |
| .attr('cx',function(d) { | |
| return projection(d.geometry.coordinates)[0] | |
| }) | |
| .attr('cy',function(d) { | |
| return projection(d.geometry.coordinates)[1] | |
| }) | |
| .attr("fill",function(d) { | |
| if(d.properties.megacity == 1) { | |
| return "darkgreen"; | |
| } else { | |
| return "salmon"; | |
| } | |
| }) | |
| .attr("opacity",0.5) | |
| }) | |
| }) | |
| </script> | |
| </body> |