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Morph Montana into Idaho with D3
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
path { | |
fill: #ccc; | |
stroke: #000; | |
} | |
</style> | |
<body> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<script> | |
//Note that for this code to work well you need to have the two shapes have | |
//the same number of nodes. I did the node number matching in R. Code mostly | |
//taken from Mike Bostock http://bl.ocks.org/mbostock/3081153 | |
var width = 400, | |
height = 400; | |
var projection = d3.geo.albers() | |
.rotate([120, 0]) | |
.center([25, 141]) | |
.scale(1500); | |
// .rotate([120, 0]) | |
// .center([0, 37.7]) | |
// .scale(2700); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height); | |
d3.json("two_states.geojson", function(polygon) { | |
var coordinates0 = polygon.features[0].geometry.coordinates[0].map(projection); | |
var coordinates1 = polygon.features[1].geometry.coordinates[0].map(projection); | |
console.log(coordinates0); | |
var path = svg.append("path").style("fill", "#1a9ebf").style("stroke", "#127891"); | |
var d0 = "M" + coordinates0.join("L") + "Z"; | |
var d1 = "M" + coordinates1.join("L") + "Z"; | |
loop(); | |
function loop() { | |
path | |
.attr("d", d0) | |
.transition() | |
.duration(5000) | |
.attr("d", d1) | |
.transition() | |
.delay(5000) | |
.attr("d", d0) | |
.each("end", loop); | |
} | |
}); | |
</script> |
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