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@bricedev
Last active August 29, 2015 14:25
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US Road Map II
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
font: 10px sans-serif;
}
.roads {
fill: none;
stroke-linejoin: round;
stroke-linecap: round;
}
.major-highway { stroke: #525252; stroke-width: 1.5px; }
.secondary-highway { stroke: #737373; }
.road { stroke: #bdbdbd; }
.beltway { stroke: #737373; }
.ferry-route { stroke: #4393c3; stroke-width: 1.5px; }
</style>
<body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/topojson/1.6.19/topojson.min.js"></script>
<script>
var width = 960,
height = 600;
var projection = d3.geo.albersUsa()
.scale(1100)
.translate([width / 2, height / 2]);
var path = d3.geo.path()
.projection(projection);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
d3.json("usroads.json", function(error, usroads) {
if (error) throw error;
svg.append("g")
.selectAll("path")
.data(topojson.feature(usroads, usroads.objects.usa).features)
.enter().append("path")
.attr("d", path)
.style("fill","none")
.style("stroke","#252525")
.style("stroke-width",1);
svg.append("g")
.selectAll("path")
.data(topojson.feature(usroads, usroads.objects.roads).features)
.enter().append("path")
.attr("d", path)
.attr("class",function(d) { return "roads " + d.properties.type.toLowerCase().split(' ').join('-'); });
var places = svg.append("g");
places.selectAll("path")
.data(topojson.feature(usroads, usroads.objects.places).features)
.enter().append("path")
.attr("d", path.pointRadius(4.5))
.style("fill","#252525")
.style("stroke","#fff")
.style("stroke-width",1);
places.selectAll("text")
.data(topojson.feature(usroads, usroads.objects.places).features)
.enter().append("text")
.attr("transform", function(d) { return "translate(" + projection(d.geometry.coordinates) + ")"; })
.attr("dy", ".35em")
.attr("dx", ".35em")
.style("font-size","15px")
.style("font-weight","bold")
.style("text-shadow", "0px 0px 2px #fff")
.text(function(d) { return d.properties.name; });
});
d3.select(self.frameElement).style("height", height + "px");
</script>

ogr2ogr
-f GeoJSON
-where "ADM0_A3 IN ('USA')"
usa.json
ne_10m_admin_0_countries.shp

ogr2ogr
-f GeoJSON
-where "sov_a3 IN ('USA')"
roads.json
ne_10m_roads.shp

ogr2ogr
-f GeoJSON
-where "ADM0_A3 = 'USA' AND SCALERANK < 3"
places.json
ne_10m_populated_places.shp

topojson
-o usroads.json
--id-property sov_a3
--properties type
--properties name
--
usa.json
roads.json
places.json

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