Created
October 1, 2014 02:10
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Mercator - OK rivers and lakes
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
.lake { | |
fill: steelblue;; | |
} | |
.river { | |
fill: none; | |
stroke: #777; | |
} | |
.water { | |
fill: black; | |
stroke: #000; | |
} | |
</style> | |
<body> | |
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<script src="http://d3js.org/topojson.v1.min.js"></script> | |
<script> | |
( function map() { | |
var width = $(window).width(), height = width/2; | |
var projection = d3.geo.transverseMercator() | |
.rotate([98 + 00 / 60, -35 + 00 / 60]) //http://www.ngs.noaa.gov/PUBS_LIB/ManualNOSNGS5.pdf | |
.scale(1) | |
.translate([0,0]); | |
var path = d3.geo.path() | |
.projection(projection); | |
var svg = d3.select("body") | |
.append("svg") | |
.attr("width", width) | |
.attr("height", height); | |
d3.json("water.json", function(error, topo) { | |
var lakes = topojson.feature(topo, topo.objects.LAKES), | |
rivers = topojson.feature(topo, topo.objects.owrbrivers); | |
var b = path.bounds(rivers), | |
s = .95 / Math.max((b[1][0] - b[0][0]) / width, (b[1][1] - b[0][1]) / height), | |
t = [(width - s * (b[1][0] + b[0][0])) / 2, (height - s * (b[1][1] + b[0][1])) / 2]; | |
projection | |
.scale(s) | |
.translate(t); | |
svg.append("g") | |
.attr("class", "rivers") | |
.selectAll("path") | |
.data(rivers.features) | |
.enter() | |
.append("path") | |
.attr("class", "river") | |
.attr("d", path); | |
svg.append("g") | |
.attr("class", "lakes") | |
.selectAll("path") | |
.data(lakes.features) | |
.enter() | |
.append("path") | |
.attr("class", "lake") | |
.attr("d", path) | |
.append("title") | |
.text(function(d) | |
{ | |
return d.properties.name; | |
}); | |
}); | |
}) () | |
</script> |
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