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index.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no, minimal-ui">
<title>U.S. Presidential Election Results</title>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto">
<link href="https://cdn.jsdelivr.net/npm/@mdi/font@5.x/css/materialdesignicons.min.css" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/vuetify@2.x/dist/vuetify.min.css" rel="stylesheet">
<style>
/* hide scroll bar */
html {
overflow-y: auto
}
body {
font-family: 'Roboto';
}
.nation,
.state,
.county {
fill: none;
stroke: #000000;
pointer-events: none;
}
.nation {
stroke-width: 0.4px;
}
.state {
stroke-width: 0.4px;
}
.county {
stroke: #aaa;
stroke-width: 0.2px;
pointer-events: auto;
cursor: pointer;
}
.background {
fill: #f5f5f5;
fill-opacity: 0.7;
}
.bar text {
font-size: 10px;
}
.bar rect {
stroke: #000000;
stroke-width: 0.5px;
}
#county-legend {
text-anchor: middle;
}
/* John A. Guerra Gomez dynamic details bar */
#details {
z-index: 999;
}
#details .title {
font-size: 1.25vmin;
}
.e-title {
font-size: 1.5vmin;
font-weight: 700;
}
/* custom tooltip */
.tooltip {
top: 100px;
left: 100px;
/* -moz-border-radius: 5px;
border-radius: 5px; */
/*border: 2px solid #000;*/
box-shadow: -4px 0 12px 0 rgba(0, 0, 0, .05);
background: #ffffff;
background-color: #fff;
border: 1px solid #ccc;
border-radius: 3px;
opacity: 1;
/* color: white; */
padding: 10px;
/* min-width: 375px; */
min-width: 36.75vmin;
font-family: 'Roboto';
font-size: 1.25vmin;
line-height: 18pt;
font-weight: lighter;
visibility: visible;
}
.tooltip.right::before {
content: '';
display: block;
width: 0;
height: 0;
position: absolute;
opacity: .9;
border-top: 8px solid transparent;
border-bottom: 8px solid transparent;
/* border-left: 8px solid #333; */
right: -8px;
top: 35px;
/* arbitrarily set */
}
.tooltip.left::before {
content: '';
display: block;
width: 0;
height: 0;
position: absolute;
opacity: .9;
border-top: 8px solid transparent;
border-bottom: 8px solid transparent;
left: -8px;
/* border-right: 8px solid #333; */
top: 35px;
/* arbitrarily set */
}
/* tooltip table */
table {
/* table-layout: fixed; */
width: 100%;
max-width: 380px;
white-space: nowrap;
border-collapse: collapse;
}
tr:not(:nth-child(1)) {
border-top: 0.5px solid #ccc;
border-collapse: collapse;
}
td:not(:nth-child(1)) {
padding-left: 3px;
}
td:nth-child(1) {
width: 1%;
}
/* reset button */
/* taken from http://materialdesignblog.com/creating-a-simple-material-design-action-button-with-css/ */
/* uses Material Design principles, which is a plus */
.fab {
width: 70px;
height: 70px;
background-color: #095591;
border-radius: 50%;
box-shadow: 0 6px 10px 0 #666;
transition: all 0.1s ease-in-out;
font-size: 50px;
color: #ffffff;
text-align: center;
line-height: 70px;
position: fixed;
right: 185px;
bottom: 110px;
cursor: pointer;
z-index: 100;
}
.fab:hover {
box-shadow: 0 6px 14px 0 #666;
transform: scale(1.05);
}
.v-btn--fab.v-btn--absolute,
.v-btn--fab.v-btn--fixed {
z-index: 5;
}
.v-btn--absolute.v-btn--top,
.v-btn--fixed.v-btn--top {
top: 55px;
}
/* scaling SVG */
/* .scaling-svg-container {
position: relative;
height: 0;
width: 100%;
padding: 0
}
.scaling-svg {
position: absolute;
height: 99%;
width: 100%;
left: 0;
top: 0
} */
</style>
</head>
<body>
<div id="app">
<v-app>
<v-app-bar app elevation="1" color="#095591" dark>
<v-toolbar-title>United States Presidential Election Results by County, 2020</v-toolbar-title>
<v-spacer></v-spacer>
<v-btn class="mx-4" icon href="https://github.com/tonmcg" target="_blank">
<v-icon large>mdi-github</v-icon>
</v-btn>
<v-btn class="mx-4" icon href="https://twitter.com/tonmcg" target="_blank">
<v-icon large>mdi-twitter</v-icon>
</v-btn>
<v-btn class="mx-4" icon href="https://www.linkedin.com/in/tonmcg" target="_blank">
<v-icon large>mdi-linkedin</v-icon>
</v-btn>
<v-btn class="mx-4" icon href="https://www.emdata.ai" target="_blank">
<v-img alt="emdata Logo" src="https://avatars1.githubusercontent.com/u/58564118?s=200&v=4"
width="36px" />
</v-btn>
</v-app-bar>
<v-main>
<v-container>
<v-card tile ref="electionMap">
<v-card-title>
<p class="text-h4">Map of United States Counties and Election Districts</p>
</v-card-title>
<v-card-subtitle class="text-subtitle-1">
<span>Source: <a
href="https://www.nytimes.com/interactive/2020/11/03/us/elections/results-president.html"
target="_blank"><em>New York Times</em></a>. Data compiled by: <a
href="https://github.com/tonmcg/US_County_Level_Election_Results_08-20/blob/master/2020_US_County_Level_Presidential_Results.csv"
target="_blank">Tony McGovern</a>.</span>
<span>Hover over and click on the map to explore</span>
</v-card-subtitle>
<v-card-text>
<div id="canvas">
<div class="scaling-svg-container">
<svg></svg>
</div>
</div>
</v-card-text>
<v-divider></v-divider>
</v-card>
</v-container>
<v-container>
<v-card tile ref="electionTable">
<v-card-title class="text-h4">Election Results Table</v-card-title>
<v-card-subtitle class="text-subtitle-1">
<span>Source: <a
href="https://www.nytimes.com/interactive/2020/11/03/us/elections/results-president.html"
target="_blank"><em>New York Times</em></a>. Data compiled by: <a
href="https://github.com/tonmcg/US_County_Level_Election_Results_08-20/blob/master/2020_US_County_Level_Presidential_Results.csv"
target="_blank">Tony McGovern</a>.</span>
<span>Click on the legend to filter results</span>
</v-card-subtitle>
<v-card-text>
<v-data-table :headers="table.headers" :items="tableRows" dense :page.sync="table.page"
:items-per-page="table.itemsPerPage" hide-default-footer sort-by="geoid"
@page-count="table.pageCount = $event" class="elevation-1">
<template v-slot:top>
<v-fab-transition>
<v-btn v-show="legend.selectedValue" color="#095591" elevation="24" absolute top
x-large right fab dark @click="legend.selectedValue = undefined">
<v-icon>mdi-autorenew</v-icon>
</v-btn>
</v-fab-transition>
</template>
<template v-slot:body="props">
<tbody>
<tr v-for="(item, i) in props.items" :key="i" class>
<td v-for="(header, k) in props.headers" :key="k"
:class="`text-${header.align}`">
<div v-if="header.value !== 'Winner'">
{{ formatValue(item[header.value], header.type) }}
</div>
<div v-else class="layout px-0">
<v-chip small tile label
:color="item.Winner == 'GOP' ? sequentialScale(-0.8) : sequentialScale(0.8)"
dark>
{{ item.Winner }}
</v-chip>
</div>
</td>
</tr>
</tbody>
</template>
<template v-slot:footer>
<v-toolbar flat>
<v-row align="center" justify="space-around">
<v-btn-toggle tile v-model="legend.selectedValue">
<v-btn class="ma-1" elevation="1" v-for="(cell, t) in cells"
:key="`cell-${t}`" :color="colorCell(t)" :dark="darkenCell(t)"
:value="cells[t]">
{{ `${(Math.abs(cells[t] ) * 100).toString()}%` }}
</v-btn>
</v-btn-toggle>
</v-row>
</v-toolbar>
<p class="text-caption text-center">Percentage Point Difference</p>
</template>
</v-data-table>
<div class="text-center pt-2">
<v-pagination v-model="table.page" :length="table.pageCount"></v-pagination>
</div>
</v-card-text>
</v-card>
</v-container>
</v-main>
<v-fab-transition>
<v-btn v-scroll="onScroll" v-show="map.showScroll" color="#009359" elevation="24" fixed x-large top
right fab dark @click="scrollMap">
<v-icon>mdi-chevron-up</v-icon>
</v-btn>
</v-fab-transition>
<v-fab-transition>
<v-btn v-scroll="onScroll" v-show="table.showScroll" color="#009359" elevation="24" fixed x-large bottom
right fab dark @click="scrollTable">
<v-icon>mdi-chevron-down</v-icon>
</v-btn>
</v-fab-transition>
<v-footer app color="#6C757D" padless>
<v-row no-gutters>
<v-col class="py-4 text-center white--text" cols="12">
{{ new Date().getFullYear() }} — <strong>Tony McGovern</strong>
</v-col>
</v-row>
</v-footer>
</v-app>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue@2.x/dist/vue.js" type="text/javascript"></script>
<script src="https://cdn.jsdelivr.net/npm/vuetify@2.x/dist/vuetify.js" type="text/javascript"></script>
<script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js" type="text/javascript"></script>
<script src="https://d3js.org/d3.v6.min.js" type="text/javascript"></script>
<script src="https://unpkg.com/topojson@3" type="text/javascript"></script>
<script defer type="text/javascript">
"use strict";
new Vue({
el: '#app',
vuetify: new Vuetify(),
data: () => ({
domain: [-1, 1], // set the domain for all scales from -1 to 1
legend: {
selectedValue: undefined
},
map: {
width: 960,
height: 720,
showScroll: false,
scrollResolved: false
},
table: {
page: 1,
pageCount: 0,
itemsPerPage: 15,
headers: [],
showScroll: true,
scrollResolved: false
},
countyPaths: {},
electionData: []
}),
computed: {
sequentialScale: function () {
return d3.scaleSequential().interpolator(d3.interpolateRdBu).domain(this.domain)
},
linearScale: function () {
return d3.scaleLinear().domain(this.domain).range([-this.map.width / 3, this.map.width /
3
]);
},
geoPath: function () {
return d3.geoPath().projection(null)
},
zoom: function () {
return d3.zoom().scaleExtent([1, 15]).on("zoom", zoomed);
},
cells: function () {
return this.sequentialScale.ticks();
},
districts: function () {
let newObj = {}
if (this.electionData.length > 0) {
this.electionData.forEach(d => {
const result = d['Percentage Point Difference'];
if (
this.legend.selectedValue === undefined ||
(result <= 0 && result >= this.legend.selectedValue) ||
(result >= 0 && result <= this.legend.selectedValue)
) newObj[d.geoid] = d;
})
}
return newObj
},
gop_votes: function () {
d3.sum(Object.keys(this.districts), r => this.districts[r].gop_votes)
},
dem_votes: function () {
d3.sum(Object.keys(this.districts), r => this.districts[r].dem_votes)
},
gop_share: function () {
this.gop_votes / (this.gop_votes + this.dem_votes)
},
dem_share: function () {
this.dem_votes / (this.gop_votes + this.dem_votes)
},
tableRows: function () {
return Object.keys(this.districts).map(d => {
return this.districts[d];
})
}
},
mounted: function () {
this.fetchData();
},
methods: {
draw() {
},
scrollTable() {
this.table.scrollResolved = false;
// wait until the promise for the other scroll function resolves
this.$vuetify.goTo(this.$refs.electionTable).then(() => this.table.scrollResolved = true);
},
scrollMap() {
this.map.scrollResolved = false;
// wait until the promise for the other scroll function resolves
this.$vuetify.goTo(this.$refs.electionMap).then(() => this.map.scrollResolved = true);
},
onScroll() {
let tableScroll = true;
let mapScroll = false;
const mapposition = this.$refs.electionMap.$el.getBoundingClientRect().y
const tableposition = this.$refs.electionTable.$el.getBoundingClientRect().y
if (tableposition < window.innerHeight - 200) {
tableScroll = false;
mapScroll = true;
}
this.table.showScroll = tableScroll;
this.map.showScroll = mapScroll;
},
formatValue(val, type) {
let formattedValue = val;
if (type === "integer") {
formattedValue = new Intl.NumberFormat('en-US').format(Math.abs(val));
} else if (type === "float") {
formattedValue = new Intl.NumberFormat('en-US', {
style: 'percent',
minimumFractionDigits: 2,
maximumFractionDigits: 2
}).format(Math.abs(val));
}
return formattedValue;
},
zoomed(event) {
const {
transform
} = event;
group.attr("transform", transform);
group.attr("stroke-width", 1 / transform.k);
// hide button if zoomed out
if (transform.k > 1 && (transform.x || transform.y !== 0)) {
fab
.transition()
.duration(500)
.style("opacity", 1)
} else {
fab
.transition()
.duration(500)
.style("opacity", 0)
}
},
highlightCell(i) {
const cellValue = this.cells[i];
const selectedValue = this.legend.selectedValue;
const isSelected = selectedValue === cellValue;
const gopSelection = selectedValue <= 0;
const demSelection = !gopSelection;
let isHighlighted = false;
if (
selectedValue === undefined ||
(gopSelection && cellValue <= 0 && cellValue >= selectedValue) ||
(demSelection && cellValue >= 0 && cellValue <= selectedValue)
) isHighlighted = true;
return isHighlighted;
},
darkenCell(i) {
const isHighlighted = this.highlightCell(i);
const cellValue = this.cells[i];
return isHighlighted && Math.abs(cellValue) > 0.5;
},
colorCell(i) {
const isHighlighted = this.highlightCell(i);
const cellValue = this.cells[i];
return isHighlighted ? this.sequentialScale(cellValue) : '#ccc';
},
async fetchData() {
// get county paths and election data
const results = await Promise.all([
d3.json("./cartography/2020/us-albers-10m.topojson"),
// axios.get("https://unpkg.com/us-atlas@1/us/10m.json"),
d3.csv("2020_US_County_Level_Presidential_Results.csv")
])
this.countyPaths = results[0].data;
// parse election data
this.electionData = results[1].map(d => {
return {
geoid: d.county_fips,
State: d.state_name,
County: d.county_name,
Winner: +d.votes_dem > +d.votes_gop ? 'Dem.' : 'GOP',
GOP: +d.votes_gop,
'Dem.': +d.votes_dem,
'Total Votes': +d.total_votes,
'Vote Diff.': +d.votes_gop - +d.votes_dem,
'% of Total Vote, GOP': +d.per_gop,
'% of Total Vote, Dem.': +d.per_dem,
'Percentage Point Difference': +d.per_point_diff * -1
}
});
// define table headers
this.table.headers = Object.keys(this.electionData[0])
// .filter(f => f !== 'geoid')
.map(r => {
const value = this.electionData[0][r];
const isFIPS = r ===
"geoid"; // test if the value is a fips code, which we need to stay as string
const isNumber = isFIPS ? false : !isNaN(
value); // test if the value can be converted safely to a number
const dataType = isNumber ? value % 1 === 0 ? 'integer' : 'float' :
'string'; // test for datatype: if string, integer, or float
const align = isNumber ? 'end' : 'start';
return {
value: r,
text: r,
align: align,
type: dataType,
width: '100%'
}
})
},
},
})
// create tooltip
const tooltip = d3.select("body").append("div").style("position", "absolute").style("z-index", "10").style(
"visibility", "hidden").attr("class", "tooltip");
// create reset button
const fab = d3.select("#canvas")
.append("div")
.attr("class", "fab")
.style("opacity", 0)
.text(' ↺ ')
.on('click', resetZoom)
// define dimensions
const width = 960;
const height = 630;
// set the domain for all scales from -1 to 1
const domain = [-1, 1]
// define color scale
const color = d3.scaleSequential().interpolator(d3.interpolateRdBu).domain(domain);
// define geo path function
const path = d3.geoPath()
.projection(null);
// define detail bar scale
const wScale = d3.scaleLinear()
.domain(domain)
.range([-width / 3, width / 3]);
// define zoom function
const zoom = d3.zoom()
.scaleExtent([1, 15])
.on("zoom", zoomed);
// define the county paths
let countyPath
// object to hold data
let districtObj = {};
// counter for missing counties
let countMissing = 0;
// array for FIPS codes
let geoids = [];
// define useful metrics
let gop_votes;
let dem_votes;
let gop_share;
let dem_share;
// start DOM manipulation
// create svg element
const svg = d3.select("svg")
.attr("viewBox", [0, 0, width, height]);
const g = svg.append("g");
// create background box for zoom
g.append("rect")
.attr("class", "background")
.attr("width", width)
.attr("height", height);
// create group for county paths
const group = g.append("g").attr('id', 'map').attr("transform", "translate(0, 0)");
// create details bar
// use John Alexis Guerra Gómez dynamic details bar
// https://johnguerra.co/
const guerraLayer = g.append("g")
.attr("id", "details")
.attr("transform", "translate(" + (width / 2 - 100) + ", 30)");
guerraLayer.append("rect")
.attr("class", "background")
.attr("transform", "translate(" + (-wScale.range()[1] + 100) + ", -20)")
.attr("width", wScale.range()[1] * 2 + 70)
.attr("rx", 5)
.attr("ry", 5)
.attr("height", 60);
guerraLayer.append("text")
.attr("id", "county-legend")
.html("Percentage Share of the Two-party Vote")
.attr("transform", "translate(100, 0)");
svg.call(zoom);
function createViz(us, data) {
// define Albers USA projection
// const projection = d3.geoAlbersUsa()
// .scale(1285)
// .translate([width / 2, height / 2])
// parse data
data.forEach(function (d) {
d.per_gop = +d.per_gop;
d.per_dem = +d.per_dem;
d.result = +d.per_point_diff * -1;
d.gop_votes = +d.votes_gop;
d.dem_votes = +d.votes_dem;
d.votes_total = +d.total_votes;
d.geoid = d.county_fips;
districtObj[d.geoid] = d;
});
// array of FIPS code for easier re-use
geoids = Object.keys(districtObj)
// calculate metrics
calculateMetrics();
// create county, state, and national paths (borders)
createPaths(us);
// create detail bars
createBars();
// bind election results to county paths
renderData(data);
bindHover();
// setResponsiveSVG();
}
// calculate metrics
function calculateMetrics() {
gop_votes = d3.sum(geoids, r => districtObj[r].gop_votes)
dem_votes = d3.sum(geoids, r => districtObj[r].dem_votes)
gop_share = gop_votes / (gop_votes + dem_votes)
dem_share = dem_votes / (gop_votes + dem_votes)
}
// create county, state, and national paths (borders)
function createPaths(us) {
// enter data and update county paths
countyPath = group.selectAll(".counties")
.data(topojson.feature(us, us.objects.district_county).features)
.enter()
.append('path')
.attr("class", "county")
.on("click", clicked)
.attr("d", path);
group.append("path")
.datum(topojson.mesh(us, us.objects.state, function (a, b) {
return a !== b;
}))
.attr("class", "state")
.attr("d", path);
group.append("path")
.datum(topojson.feature(us, us.objects.nation))
.attr("class", "nation")
.attr("d", path);
}
// render visualization based on data
function renderData(data) {
updatePaths();
}
// create detail bars
function createBars() {
const guerraBars = guerraLayer.selectAll("bar")
.data([dem_share, -gop_share])
.enter()
.append("g")
.attr("class", "bar");
guerraBars
.append("rect")
.attr("width", 0)
.attr("height", width > 767 ? 20 : 10)
.attr("x", 100)
.attr("y", 10)
.style("fill", color)
.transition()
.duration(500)
.attr("x", function (d) {
return d > 0 ? 100 : 100 - wScale(-d);
})
.attr("width", function (d) {
return d > 0 ? wScale(d) : wScale(-d);
});
guerraBars.append("text")
.text(showDiffLabel)
.attr("dx", function (d) {
return d > 0 ? 5 : -5;
})
.attr("dy", 24)
.attr("x", 100)
.style("text-anchor", function (d) {
return d > 0 ? "start" : "end";
})
.transition()
.duration(500)
.attr("x", function (d) {
return d > 0 ? 100 + wScale(d) : 100 - wScale(-d);
});
}
function updateLegend(data) {
susieLegend
.labelFormat(function (d) {
return d3.format('.0%')(Math.abs(d));
})
.on("cellclick", function (d) {
const selectedBar = d3.select(d.target);
const selectedCell = d3.select(d.target.parentNode);
const selectedClass = selectedCell.attr('class').split(' ')[1];
const selectedTick = selectedBar.data()[0];
// set the opacity for the selected cell and all other cells
d3.selectAll('.cell')._groups[0].forEach(c => {
const isSelected = c.classList.contains(selectedClass)
let opacity = 0.3;
// if the selection is the middle one, then reset all cell opacity
if (isSelected || selectedTick === 0) opacity = 1
d3.select(c).style('opacity', opacity)
})
districtObj = {}
data.forEach((r, i) => {
if (selectedTick === 0) {
districtObj[r.geoid] = r;
} else if (r.result > 0 && r.result < selectedTick) {
districtObj[r.geoid] = r;
} else if (r.result < 0 && r.result > selectedTick) {
districtObj[r.geoid] = r;
}
})
})
.title('Percentage Point Difference')
.scale(color);
legend.call(susieLegend);
// add special classes to each cell of the legend
d3.selectAll('.cell').each((d, i, nodes) => {
nodes[i].classList.add(`cell-${i}`);
})
}
// adjust data bar on hover
function updateBars(d) {
let share = [dem_share, -gop_share];
let label =
`<tspan x="0" y="0">Percentage Point Difference: ${formatValue(Math.abs(share[0] + share[1]), 'percent')}</tspan>`;
if (d) {
const county = districtObj[d.id];
// county = districtObj[d.properties.geoid];
if (county) {
share = [county.per_dem, -county.per_gop];
label =
`<tspan x="0" y="0">Percentage Point Difference: ${formatValue(Math.abs(county.result), 'percent')}</tspan>`;
}
}
const guerraBars = guerraLayer
.selectAll(".bar")
.data(share);
guerraBars.select("rect")
.transition()
.duration(500)
.attr("x", function (d) {
return d > 0 ? 100 : 100 - wScale(-d);
})
.attr("width", function (d) {
return d > 0 ? wScale(d) : wScale(-d);
})
.style("fill", color);
guerraBars.select("text")
.text(showDiffLabel)
.transition()
.duration(500)
.attr("x", function (d) {
return d > 0 ? 100 + wScale(d) : 100 - wScale(-d);
})
guerraLayer.select("#county-legend").html(label);
}
// update fill property of county paths
function updatePaths() {
// update map with new data
countyPath
.transition()
.duration(1000)
.style("fill", function (d) {
const county = districtObj[d.id];
// const county = districtObj[d.properties.geoid];
if (county)
return color(county.result);
else {
// countMissing++;
// console.log("geoid: " + d.id + " not found. Error #" + countMissing);
// console.log("geoid: " + d.properties.geoid + " not found. Error #" + countMissing);
return '#ccc';
}
});
}
function resetZoom() {
svg.transition().duration(750).call(
zoom.transform,
d3.zoomIdentity,
d3.zoomTransform(svg.node()).invert([width / 2, height / 2])
);
}
// define click function
function clicked(event, d) {
const [
[x0, y0],
[x1, y1]
] = path.bounds(d);
event.stopPropagation();
svg.transition().duration(750).call(
zoom.transform,
d3.zoomIdentity
.translate(width / 2, height / 2)
.scale(Math.min(8, 0.9 / Math.max((x1 - x0) / width, (y1 - y0) / height)))
.translate(-(x0 + x1) / 2, -(y0 + y1) / 2),
d3.pointer(event, svg.node())
);
}
// define zoom event
function zoomed(event) {
const {
transform
} = event;
group.attr("transform", transform);
group.attr("stroke-width", 1 / transform.k);
// hide button if zoomed out
if (transform.k > 1 && (transform.x || transform.y !== 0)) {
fab
.transition()
.duration(500)
.style("opacity", 1)
} else {
fab
.transition()
.duration(500)
.style("opacity", 0)
}
}
// define mouseover and mouseout events to ensure mouseover events work on IE
function bindHover() {
document.body.addEventListener('mousemove', function (e) {
if (e.target.nodeName == 'path' && e.target.className.animVal !== 'state') {
const d = d3.select(e.target).data()[0];
const county = districtObj[d.id]
// const county = districtObj[d.properties.geoid]
const value = formatValue(county.result);
const dem_votes = (county.dem_votes)
const gop_votes = (county.gop_votes)
const votes_total = (county.votes_total)
const report_level = '<div class="e-title">' + county.county_name + ', ' + county
.state_name + '</div>';
const startTable = '<table>'
// const tbody = `<tbody><tr><td><svg height="20" width="150"><rect height="20" width="4" style="fill:${color(0.75)}"></rect><text x="10" y="15">Joseph R. Biden</text></svg></td><td>Dem.</td><td style="text-align:right">${formatValue(dem_votes)}</td><td style="text-align:right; font-weight:700">${formatValue(dem_votes / votes_total, "percent")}</td></tr><tr><td><svg height="20" width="150"><rect height="20" width="4" style="fill:${color(-0.75)}"></rect><text x="10" y="15">Donald J. Trump</text></svg></td><td>Rep.</td><td style="text-align:right">${formatValue(gop_votes)}</td><td style="text-align:right; font-weight:700">${formatValue(gop_votes / votes_total, "percent")}</td></tr><tr style="font-size:13px"><td><span><strong>All Votes</strong></span></td><td></td><td style="text-align:right"><span><strong>${formatValue(votes_total)}</strong></span></td><td style="text-align:right"></td></tr></tbody>`;
const tbody =
`<table><tbody><tr><td></td><th>Candidate</th><th>Party</th><th style="text-align:right">Votes</th><th style="text-align:right">Pct.</th></tr><tr><td style="background-color:${color(0.75)}"></td><td>Joseph R. Biden</td><td>Dem.</td><td style="text-align:right">${formatValue(dem_votes)}</td><td style="text-align:right; font-weight:700">${formatValue(dem_votes / votes_total, "percent")}</td></tr><tr><td style="background-color:${color(-0.75)}"></td><td>Donald J. Trump</td><td>Rep.</td><td style="text-align:right">${formatValue(gop_votes)}</td><td style="text-align:right; font-weight:700">${formatValue(gop_votes / votes_total, "percent")}</td></tr><tr style="font-size:13px"><td></td><td><span><strong>All Votes</strong></span></td><td></td><td style="text-align:right"><span><strong>${formatValue(votes_total)}</strong></span></td><td style="text-align:right"></td></tr></tbody></table>`
const endTable = '</table>';
// show tooltip with information from the __data__ property of the element
const content = report_level + startTable + tbody + endTable;
showDetail(e, content);
updateBars(d);
}
});
document.body.addEventListener('mouseout', function (e) {
if (e.target.nodeName == 'path') hideDetail();
});
}
// return percentage point labels for details bars
function showDiffLabel(d) {
return d > 0 ? `Dem. ${formatValue(d, 'percent')}` : `Rep. ${formatValue(-d, 'percent')}`
}
// Show tooltip on hover
function showDetail(event, content) {
// show tooltip with information from the __data__ property of the element
let x_hover = 0;
let y_hover = 0;
const tooltipWidth = parseInt(tooltip.style('width'));
const tooltipHeight = parseInt(tooltip.style('height'));
let classed, notClassed;
if (event.pageX > document.body.clientWidth / 2) {
x_hover = tooltipWidth + 30;
classed = 'right';
notClassed = 'left';
} else {
x_hover = -30;
classed = 'left';
notClassed = 'right';
}
y_hover = (document.body.clientHeight - event.pageY < (tooltipHeight + 4)) ? event.pageY - (tooltipHeight +
4) : event.pageY - tooltipHeight / 2;
return tooltip
.classed(classed, true)
.classed(notClassed, false)
.style("visibility", "visible")
.style("top", y_hover + "px")