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index.html
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index.html
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<!DOCTYPE html>
<meta charset="utf-8">
<style>
/* 292929,ABABAB,3F6B38,48A1A8,87563B, */
body {
background: #292929;
}
.states path {
fill: #FFF7FB;
stroke: #292929;
transition: fill 1s ease;
-webkit-transition: fill 1s ease;
}
.countries path {
fill: #FFF7FB;
stroke: #292929;
transition: fill 1s ease;
-webkit-transition: fill 1s ease;
/*stroke-dasharray: 1, 1;*/
/*stroke-width: 0.5px;*/
}
</style>
<body>
<script src="d3.min.js"></script>
<script src="http://d3js.org/queue.v1.min.js"></script>
<script src="http://d3js.org/topojson.v0.min.js"></script>
<script src="underscore.js"></script>
<script>
var width = 960, height = 500;
var svg = d3.select('body').append('svg')
.attr('width', width).attr('height', height);
var projection = d3.geo.mercator().scale(850).translate([600, 350]);
var path = d3.geo.path()
.projection(projection);
var statePath = d3.geo.path().projection(
d3.geo.albersUsa().scale(600).translate([300, 150]));
queue()
.defer(d3.json, 'countries.topo.json')
.defer(d3.json, 'states.topo.json')
.defer(d3.csv, 'volunteer_countries.csv')
.await(ready);
function sum(arr) {
return _.reduce(arr, function(a, b) { return (+a) + (+b); }, 0);
}
function kvMap(obj, fn) {
var res = {};
_.forEach(obj, function(val, key) {
var tmp = fn(key, val);
res[tmp[0]] = tmp[1];
});
return res;
}
function ready(error, world, states_topo, volunteer_countries) {
// volunteer_countries is:
// post_cntry_num, post_cntry_name, hs_state, count
id2name = {};
name2id = {};
countries = topojson.object(world, world.objects.countries).geometries;
countries.forEach(function(d) {
id2name[d.id] = d.properties.name;
name2id[d.properties.name.toLowerCase()] = d.id;
});
_.extend(name2id, {
'solomon islands': 'SLB', // Solomon Islands
'car': 'CAF', // Central African Republic
'png': 'PNG', // Papua New Guinea
'zaire': 'COD', // Democratic Republic of the Congo
'dominican republic': 'DOM',
"cook islands": "cook islands",
"cote d ivoire": "cote d ivoire",
"czech":"czech",
"east timor": "east timor",
"eastern caribbean": "eastern caribbean",
"equatorial guinea": "equatorial guinea",
"guinea bissau":"guinea bissau",
"korea south":"korea south",
"leeward islands":"leeward islands",
"marshall islands":"marshall islands",
"russia far east":"russia far east",
"russia western":"russia western",
"sao tome":"sao tome",
"sav":"sav",
"tuvalu":"tuvalu",
"windward islands":"windward islands"
});
faileds = {};
function pcNameToId(name) {
name = name.toLowerCase();
if (_.has(name2id, name)) {
return name2id[name];
}
faileds[name] = name;
}
country_to_state = d3.nest()
.key(function(d) { return pcNameToId(d.post_cntry_name); })
.key(function(d) { return d.hs_state; })
.rollup(function(entries) { return sum(_.pluck(entries, 'count')); })
.map(volunteer_countries);
state_to_country = d3.nest()
.key(function(d) { return d.hs_state; })
.key(function(d) { return pcNameToId(d.post_cntry_name); })
.rollup(function(entries) { return sum(_.pluck(entries, 'count')); })
.map(volunteer_countries);
var total_from_country = kvMap(country_to_state, function(country, states) {
return [country, sum(_.values(states))];
});
var total_from_state = kvMap(state_to_country, function(state, countries) {
return [state, sum(_.values(countries))];
});
var total_total = sum(_.values(total_from_country));
window.total_from_state = total_from_state;
function setStateHighlights(activeCountry) {
if (!_.has(country_to_state, activeCountry)) activeCountry = null;
var scale = d3.scale.linear()
.domain([0, 1])
.range(['#F7FCFD', '#00441B']);
var byState = activeCountry ? country_to_state[activeCountry] : total_from_state;
d3.selectAll('.states path').style('fill', function(d) {
var total = activeCountry ? total_from_country[activeCountry] / 50 : total_total / 100;
return scale(Math.min(1, byState[d.id] / total));
});
}
function setCountryHighlights(activeState) {
var total = activeState ? total_from_state[activeState] : total_total;
var scale = d3.scale.linear()
.domain([0, 1])
.range(['#FFF7FB', '#023858']);
var byCountry = activeState ? state_to_country[activeState] : total_from_country;
d3.selectAll('.countries path').style('fill', function(d) { return scale(Math.min(1, byCountry[d.id] / (total/100))); });
}
var countries_g = svg.append('g').attr('class', 'countries PuBu');
countries_g.selectAll('path').data(countries)
.enter().append('svg:path')
.attr('d', path).attr('id', function(d) { return 'country-'+d.id; })
.on('mouseenter', function(d) {
setStateHighlights(d.id);
})
.on('mouseleave', function(d) {
setStateHighlights();
});
var states = topojson.object(states_topo, states_topo.objects.states).geometries;
var states_g = svg.append('g').attr('class', 'states PuBu');
states_g.selectAll('path').data(states)
.enter().append('svg:path')
.attr('d', statePath).attr('id', function(d) { return 'state-'+d.id; })
.on('mouseenter', function(d) {
setCountryHighlights(d.id);
})
.on('mouseleave', function(d) {
setCountryHighlights();
});
setStateHighlights();
setCountryHighlights();
}
</script>
</body>