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Vermont Population Choropleth
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
svg { | |
font: 10px sans-serif; | |
display: inline; | |
} | |
.key path { | |
display: none; | |
} | |
.key line { | |
stroke: #000; | |
shape-rendering: crispEdges; | |
} | |
.key text { | |
font-size: 10px; | |
} | |
</style> | |
<body> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<script src="http://d3js.org/topojson.v1.min.js"></script> | |
<script> | |
// Set window height + width | |
var width = 500, | |
height = 650; | |
// Define map projection | |
var projection = d3.geo.transverseMercator() | |
.rotate([72.57, -44.20]) | |
.translate([175,185]) | |
.scale([12000]); | |
// Define path generator | |
var path = d3.geo.path() | |
.projection(projection); | |
// Create SVG Element | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height); | |
// Define scale to sort data values into color buckets | |
var color = d3.scale.threshold() | |
.domain([10, 200, 1000, 2000, 5000, 10000, 20000, 40000, 50000]) | |
.range(["#fff7ec","#fee8c8","#fdd49e","#fdbb84","#fc8d59","#ef6548","#d7301f","#b30000","#7f0000"]); | |
// Legend Stuff | |
var y = d3.scale.sqrt() | |
.domain([0, 50000]) | |
.range([0,325]); | |
var yAxis = d3.svg.axis() | |
.scale(y) | |
.tickValues(color.domain()) | |
.orient("right"); | |
// Load CSV | |
d3.csv("vt_pop.csv", function(data) { | |
// Load TopoJSON | |
d3.json("vermont.json", function(error, vt) { | |
for (var i = 0; i < data.length; i++) { | |
var dataTown = data[i].town; | |
var dataPop = parseFloat(data[i].population); | |
for (var j = 0; j < vt.objects.vt_towns.geometries.length; j++) { | |
var jsonTown = vt.objects.vt_towns.geometries[j].properties.town; | |
if (dataTown.toUpperCase() == jsonTown) { | |
vt.objects.vt_towns.geometries[j].properties.population = dataPop; | |
break; | |
} | |
} | |
} | |
var vermont = topojson.feature(vt, vt.objects.vt_towns); | |
svg.append("path") | |
.datum(vermont) | |
.attr("d", path) | |
.style("stroke", "#777") | |
.style("stroke-width", "1"); | |
var g = svg.append("g") | |
.attr("class", "key") | |
.attr("transform", "translate(320, 165)") | |
.call(yAxis); | |
g.selectAll("rect") | |
.data(color.range().map(function(d, i) { | |
return { | |
y0: i ? y(color.domain()[i - 1]) : y.range()[0], | |
y1: i < color.domain().length ? y(color.domain()[i]) : y.range()[1], | |
z: d | |
}; | |
})) | |
.enter().append("rect") | |
.attr("width", 8) | |
.attr("y", function(d) { return d.y0; }) | |
.attr("height", function(d) { return d.y1 - d.y0; }) | |
.style("fill", function(d) { return d.z; }); | |
svg.selectAll(".subunit") | |
.data(topojson.feature(vt, vt.objects.vt_towns).features) | |
.enter().append("path") | |
.attr("d", path) | |
.style("fill", function(d) { | |
var population = d.properties.population; | |
if (population) { | |
return color(population); | |
} else { | |
return "#ddd"; | |
} | |
}) | |
.on("mouseover", function(d) { | |
var xPosition = d3.mouse(this)[0]; | |
var yPosition = d3.mouse(this)[1] - 30; | |
svg.append("text") | |
.attr("id", "tooltip") | |
.attr("x", xPosition) | |
.attr("y", yPosition) | |
.attr("text-anchor", "middle") | |
.attr("font-family", "sans-serif") | |
.attr("font-size", "11px") | |
.attr("font-weight", "bold") | |
.attr("fill", "black") | |
.text(d.properties.town); | |
d3.select(this) | |
.style("fill", "#509e2f"); | |
}) | |
.on("mouseout", function(d) { | |
d3.select("#tooltip").remove(); | |
d3.select(this) | |
.transition() | |
.duration(250) | |
.style("fill", function(d) { | |
var population = d.properties.population; | |
if (population) { | |
return color(population); | |
} else { | |
return "#ddd"; | |
} | |
}); | |
}); | |
svg.append("path") | |
.datum(topojson.feature(vt, vt.objects.lake)) | |
.attr("d", path) | |
.style("stroke", "#89b6ef") | |
.style("stroke-width", "1px") | |
.style("fill", "#b6d2f5"); | |
}); | |
}); | |
</script> |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
town | population | |
---|---|---|
Addison | 1357 | |
Albany | 932 | |
Alburgh | 2004 | |
Andover | 471 | |
Arlington | 2297 | |
Athens | 438 | |
Averill | 24 | |
Avery's Gore | 0 | |
Bakersfield | 1342 | |
Baltimore | 247 | |
Barnard | 939 | |
Barnet | 1696 | |
Barre | 16900 | |
Barton | 2753 | |
Belvidere | 354 | |
Bennington | 15555 | |
Benson | 1049 | |
Berkshire | 1710 | |
Berlin | 2871 | |
Bethel | 2020 | |
Bloomfield | 219 | |
Bolton | 1188 | |
Bradford | 2782 | |
Braintree | 1236 | |
Brandon | 3919 | |
Brattleboro | 11848 | |
Bridgewater | 933 | |
Bridport | 1215 | |
Brighton | 1204 | |
Bristol | 3875 | |
Brookfield | 1295 | |
Brookline | 526 | |
Brownington | 979 | |
Brunswick | 113 | |
Buel's Gore | 30 | |
Burke | 1744 | |
Burlington | 42282 | |
Cabot | 1452 | |
Calais | 1601 | |
Cambridge | 3726 | |
Canaan | 954 | |
Castleton | 4665 | |
Cavendish | 1363 | |
Charleston | 1014 | |
Charlotte | 3812 | |
Chelsea | 1241 | |
Chester | 3116 | |
Chittenden | 1241 | |
Clarendon | 2543 | |
Colchester | 17245 | |
Concord | 1221 | |
Corinth | 1370 | |
Cornwall | 1174 | |
Coventry | 1077 | |
Craftsbury | 1195 | |
Danby | 1300 | |
Danville | 2197 | |
Derby | 4562 | |
Dorset | 2008 | |
Dover | 1113 | |
Dummerston | 1840 | |
Duxbury | 1336 | |
East Haven | 287 | |
East Montpelier | 2602 | |
Eden | 1345 | |
Elmore | 871 | |
Enosburg | 2770 | |
Essex | 20057 | |
Fair Haven | 2693 | |
Fairfax | 4398 | |
Fairfield | 1920 | |
Fairlee | 980 | |
Fayston | 1358 | |
Ferdinand | 32 | |
Ferrisburgh | 2757 | |
Fletcher | 1295 | |
Franklin | 1417 | |
Georgia | 4602 | |
Glastenbury | 8 | |
Glover | 1113 | |
Goshen | 163 | |
Grafton | 674 | |
Granby | 87 | |
Grand Isle | 2069 | |
Granville | 297 | |
Greensboro | 754 | |
Groton | 1020 | |
Guildhall | 260 | |
Guilford | 2104 | |
Halifax | 725 | |
Hancock | 322 | |
Hardwick | 2968 | |
Hartford | 9838 | |
Hartland | 3385 | |
Highgate | 3568 | |
Hinesburg | 4457 | |
Holland | 624 | |
Hubbardton | 698 | |
Huntington | 1969 | |
Hyde Park | 3037 | |
Ira | 429 | |
Irasburg | 1153 | |
Isle La Motte | 473 | |
Jamaica | 1027 | |
Jay | 539 | |
Jericho | 5028 | |
Johnson | 3495 | |
Killington | 802 | |
Kirby | 490 | |
Landgrove | 159 | |
Leicester | 1109 | |
Lemington | 102 | |
Lewis | 0 | |
Lincoln | 1266 | |
Londonderry | 1762 | |
Lowell | 871 | |
Ludlow | 1945 | |
Lunenburg | 1287 | |
Lyndon | 5969 | |
Maidstone | 206 | |
Manchester | 4339 | |
Marlboro | 1069 | |
Marshfield | 1567 | |
Mendon | 1051 | |
Middlebury | 8477 | |
Middlesex | 1756 | |
Middletown Springs | 741 | |
Milton | 10526 | |
Monkton | 2015 | |
Montgomery | 1197 | |
Montpelier | 7787 | |
Moretown | 1666 | |
Morgan | 746 | |
Morristown | 5335 | |
Mount Holly | 1229 | |
Mount Tabor | 254 | |
New Haven | 1747 | |
Newark | 581 | |
Newbury | 2212 | |
Newfane | 1697 | |
Newport | 6281 | |
North Hero | 803 | |
Northfield | 6185 | |
Norton | 165 | |
Norwich | 3393 | |
Orange | 1075 | |
Orwell | 1245 | |
Panton | 670 | |
Pawlet | 1459 | |
Peacham | 726 | |
Peru | 371 | |
Pittsfield | 543 | |
Pittsford | 2943 | |
Plainfield | 1257 | |
Plymouth | 615 | |
Pomfret | 898 | |
Poultney | 3387 | |
Pownal | 3490 | |
Proctor | 1705 | |
Putney | 2700 | |
Randolph | 4762 | |
Reading | 659 | |
Readsboro | 751 | |
Richford | 2322 | |
Richmond | 4093 | |
Ripton | 582 | |
Rochester | 1126 | |
Rockingham | 5190 | |
Roxbury | 693 | |
Royalton | 2771 | |
Rupert | 706 | |
Rutland | 20257 | |
Ryegate | 1164 | |
Salisbury | 1128 | |
Sandgate | 403 | |
Searsburg | 108 | |
Shaftsbury | 3554 | |
Sharon | 1497 | |
Sheffield | 700 | |
Shelburne | 7449 | |
Sheldon | 2207 | |
Shoreham | 1268 | |
Shrewsbury | 1044 | |
Somerset | 3 | |
South Burlington | 18400 | |
South Hero | 1634 | |
Springfield | 9284 | |
St. Albans | 13030 | |
St. George | 680 | |
St. Johnsbury | 7591 | |
Stamford | 818 | |
Stannard | 220 | |
Starksboro | 1769 | |
Stockbridge | 733 | |
Stowe | 4390 | |
Strafford | 1102 | |
Stratton | 213 | |
Sudbury | 553 | |
Sunderland | 950 | |
Sutton | 1030 | |
Swanton | 6436 | |
Thetford | 2600 | |
Tinmouth | 619 | |
Topsham | 1174 | |
Townshend | 1223 | |
Troy | 1642 | |
Tunbridge | 1288 | |
Underhill | 3044 | |
Vergennes | 2584 | |
Vernon | 2192 | |
Vershire | 723 | |
Victory | 61 | |
Waitsfield | 1726 | |
Walden | 932 | |
Wallingford | 2055 | |
Waltham | 478 | |
Wardsboro | 890 | |
Warner's Grant | 0 | |
Warren | 1704 | |
Warren's Gore | 4 | |
Washington | 1031 | |
Waterbury | 5102 | |
Waterford | 1285 | |
Waterville | 685 | |
Weathersfield | 2810 | |
Wells | 1144 | |
West Fairlee | 659 | |
West Haven | 263 | |
West Rutland | 2283 | |
West Windsor | 1095 | |
Westfield | 527 | |
Westford | 2043 | |
Westminster | 3132 | |
Westmore | 347 | |
Weston | 563 | |
Weybridge | 827 | |
Wheelock | 808 | |
Whiting | 420 | |
Whitingham | 1350 | |
Williamstown | 3394 | |
Williston | 8962 | |
Wilmington | 1853 | |
Windham | 416 | |
Windsor | 3498 | |
Winhall | 762 | |
Winooski | 7239 | |
Wolcott | 1720 | |
Woodbury | 901 | |
Woodford | 418 | |
Woodstock | 3012 | |
Worcester | 1001 |
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