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app_splatterplot.js
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app_splatterplot.js
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// Based on https://bl.ocks.org/syntagmatic/ba23d525f8986cb0ebf30a5dd30c9dd2
const margin = {
top: 30,
right: 50,
bottom: 40,
left: 50,
};
const width = 960 - margin.left - margin.right;
const height = 500 - margin.top - margin.bottom;
const formatter = d3.format('.0%');
const svg = d3
.select('body')
.append('svg')
.attr('width', width + margin.left + margin.right)
.attr('height', height + margin.top + margin.bottom)
.append('g')
.attr('transform', `translate(${margin.left},${margin.top})`);
const xscale = d3
.scaleLinear()
.domain([0, 1])
.range([0, width]);
const yscale = d3
.scaleLinear()
.domain([0, 1])
.range([height, 0]);
const radius = d3.scaleSqrt().range([2, 8]);
const xAxis = d3
.axisBottom()
.tickSize(-height)
.tickFormat(formatter)
.scale(xscale);
const yAxis = d3
.axisLeft()
.tickSize(-width)
.scale(yscale);
//const color = d3.scaleOrdinal().range(['#002CFC', '#3F61D3', '#7E95A9', '#BCCA80', '#FBFE56']);
const color = d3.scaleOrdinal(d3.schemeCategory20);
// Helper function to check if string is number
// Source:
function hasNumber(myString) {
return /\d/.test(myString);
}
function clean(row) {
// Credits for the original function go to @woooorm
// Source: https://github.com/cmda-fe3/course-17-18/blob/38a05f951e04d6fae3eeec72a7b0cbaf14c2110f/script/crawl-assessment-1-data.js#L131-L152
var result = {};
var begin = 2005;
var index = 0;
var key = String(begin);
do {
result[key] = row[key] === ':' ? null : parseFloat(row[key], 10);
key = String(begin + ++index);
} while (key in row);
return result;
}
// Import JSON file
d3.json('../assets/data/toilets.json', (error, data) => {
if (error) throw error;
// Todo: Make dates dynamic depening on the dataset
let beginYear = 2005;
let endYear = 2016;
//let yearPeriod = endYear - beginYear;
// data pre-processing
data.forEach(d => {
// d.x = +d["2007"]; // get year
// Loop through years and output years as string
for (let i = beginYear; i < endYear; i++) {
if (i >= beginYear && i <= endYear) {
let yearInString = String(i);
let yearInNumber = Number(i);
d.y = +i; // get year
d.x = +d[yearInString]; // get percentage for x-axis from each year
console.log("this is d.y -->" + d.y);
console.log("this is d.x -->" + d.x);
} else { // done with loop, return both d.y and d.x
return d.y;
return d.x;
}
}
d.c = d["code"]; // get country code
});
// Set domain for Yaxis
//yscale.domain([new Date(beginYear, 0, 0), new Date(endYear, 0, 0)])
yscale.domain(d3.extent(data, d => d.y)).nice();
radius.domain(d3.extent(data, d => d.r)).nice();
data.sort((a, b) => b.r - a.r);
svg
.append('g')
.attr('transform', `translate(0,${height})`)
.attr('class', 'x axis')
.call(xAxis);
svg
.append('g')
.attr('transform', 'translate(0,0)')
.attr('class', 'y axis')
.call(yAxis);
const group = svg
.selectAll('g.bubble')
.data(data)
.enter()
.append('g')
.attr('class', 'bubble')
.attr('transform', d => `translate(${xscale(d.x)},${yscale(d.y)})`);
group
.append('circle')
// .attr("r", d => radius(d.r))
.attr('r', 10)
.style('fill', 'brown');
// .style("fill", d => color(d.team86));
group
.append('text')
.attr('x', 20)
.attr('alignment-baseline', 'middle')
.text(d => `${d.code}`);
svg
.append('text')
.attr('x', 6)
.attr('y', -2)
.attr('class', 'label')
.text('Year');
svg
.append('text')
.attr('x', width - 2)
.attr('y', height - 6)
.attr('text-anchor', 'end')
.attr('class', 'label')
.text('Percentage of population without a toilet if known');
const legend = svg
.selectAll('.legend')
.data(color.domain())
.enter()
.append('g')
.attr('class', 'legend')
.attr('transform', (d, i) => `translate(2,${i * 14})`);
legend
.append('rect')
.attr('x', width)
.attr('width', 12)
.attr('height', 12)
.style('fill', color);
legend
.append('text')
.attr('x', width + 16)
.attr('y', 6)
.attr('dy', '.35em')
.style('text-anchor', 'start')
.text(d => d);
legend
.on('mouseover', function(type) {
d3.selectAll('.legend').style('opacity', 0.1);
d3.select(this).style('opacity', 1);
d3
.selectAll('.bubble')
.style('opacity', 0.1)
.filter(d => d.team86 == type)
.style('opacity', 1);
})
.on('mouseout', type => {
d3.selectAll('.legend').style('opacity', 1);
d3.selectAll('.bubble').style('opacity', 1);
});
});