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Merge pull request #350 from jmcarp/feature/filings-tab
Feature/filings tab
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,149 @@ | ||
| 'use strict'; | ||
|
|
||
| /* global require, module, window, document, API_LOCATION, API_VERSION, API_KEY */ | ||
|
|
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| var d3 = require('d3'); | ||
| var $ = require('jquery'); | ||
| var URI = require('URIjs'); | ||
| var _ = require('underscore'); | ||
| var chroma = require('chroma-js'); | ||
| var topojson = require('topojson'); | ||
|
|
||
| var events = require('./events'); | ||
| var helpers = require('./helpers'); | ||
| var states = require('../us.json'); | ||
|
|
||
| var compactRules = [ | ||
| ['B', 9], | ||
| ['M', 6], | ||
| ['k', 3] | ||
| ]; | ||
|
|
||
| function chooseRule(value) { | ||
| return _.find(compactRules, function(rule) { | ||
| return value >= Math.pow(10, rule[1]); | ||
| }); | ||
| } | ||
|
|
||
| function compactNumber(value, rule) { | ||
| var divisor = Math.pow(10, rule[1]); | ||
| return d3.round(value / divisor, 1).toString() + rule[0]; | ||
| } | ||
|
|
||
| function stateMap($elm, width, height) { | ||
| var url = URI(API_LOCATION) | ||
| .path([ | ||
| API_VERSION, | ||
| 'committee', | ||
| $elm.data('committee-id'), | ||
| 'schedules', | ||
| 'schedule_a', | ||
| 'by_state' | ||
| ].join('/')) | ||
| .query({ | ||
| cycle: $elm.data('cycle'), | ||
| per_page: 99 | ||
| }) | ||
| .toString(); | ||
|
|
||
| var svg = d3.select($elm[0]) | ||
| .append('svg') | ||
| .attr('width', width) | ||
| .attr('height', height); | ||
| var projection = d3.geo.albersUsa() | ||
| .scale(450) | ||
| .translate([220, 250]); | ||
| var path = d3.geo.path().projection(projection); | ||
|
|
||
| d3.json(url, function(error, data) { | ||
| var results = _.reduce( | ||
| data.results, | ||
| function(acc, val) { | ||
| acc[val.state_full] = val.total; | ||
| return acc; | ||
| }, | ||
| {} | ||
| ); | ||
| var quantiles = 4; | ||
| var max = _.max(_.pluck(data.results, 'total')); | ||
| var scale = chroma.scale(['#fff', '#2678BA']).domain([0, max]); | ||
| var quantize = chroma.scale(['#fff', '#2678BA']).domain([0, max], quantiles); | ||
| var map = svg.append('g') | ||
| .selectAll('path') | ||
| .data(topojson.feature(states, states.objects.units).features) | ||
| .enter().append('path') | ||
| .attr('fill', function(d) { | ||
| return scale(results[d.properties.name]); | ||
| }) | ||
| .attr('data-state', function(d) { | ||
| return d.properties.name; | ||
| }) | ||
| .attr('class', 'shape') | ||
| .attr('d', path); | ||
|
|
||
| // Add legend swatches | ||
| var legendWidth = 40; | ||
| var legendBar = 35; | ||
| var legend = svg.selectAll('g.legend') | ||
| .data(quantize.domain()) | ||
| .enter() | ||
| .append('g') | ||
| .attr('class', 'legend'); | ||
| legend.append('rect') | ||
| .attr('x', function(d, i) { | ||
| return i * legendWidth + (legendWidth - legendBar) / 2; | ||
| }) | ||
| .attr('y', 20) | ||
| .attr('width', legendBar) | ||
| .attr('height', 20) | ||
| .style('fill', function(d) { | ||
| return scale(d); | ||
| }); | ||
|
|
||
| // Add legend text | ||
| var compactRule = chooseRule(quantize.domain()[Math.floor(quantiles / 2)]); | ||
| legend.append('text') | ||
| .attr('x', function(d, i) { | ||
| return (i + 0.5) * legendWidth; | ||
| }) | ||
| .attr('y', 50) | ||
| .attr('width', legendWidth) | ||
| .attr('height', 20) | ||
| .attr('font-size', '10px') | ||
| .attr('text-anchor', 'middle') | ||
| .text(function(d) { | ||
| return compactNumber(d, compactRule); | ||
| }); | ||
| }); | ||
| } | ||
|
|
||
| function highlightState($parent, state) { | ||
| var rule = '[data-state="' + state + '"]'; | ||
| $parent.find('path:not(' + rule + ')').each(function(idx, elm) { | ||
| elm.classList.remove('active'); | ||
| }); | ||
| var $path = $parent.find('path' + rule); | ||
| if ($path.length) { | ||
| $path[0].classList.add('active'); | ||
| } | ||
| } | ||
|
|
||
| function init() { | ||
| $('.state-map').each(function(idx, elm) { | ||
| var $elm = $(elm); | ||
| stateMap($elm, 400, 400); | ||
| events.on('state.table', function(params) { | ||
| highlightState($elm, params.state); | ||
| }); | ||
| $elm.on('click', 'path[data-state]', function(e) { | ||
| var state = $(this).attr('data-state'); | ||
| highlightState($elm, state); | ||
| events.emit('state.map', {state: state}); | ||
| }); | ||
| }); | ||
| } | ||
|
|
||
| module.exports = { | ||
| init: init, | ||
| stateMap: stateMap | ||
| }; |
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