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sections.js
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sections.js
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//HEATMAP
var margin = {top: 80, right: 25, bottom: 160, left: 120},
width = 900 - margin.left - margin.right,
height = 2000 - margin.top - margin.bottom;
// append the svg object to the body of the page
var svg = d3.select("#my_dataviz")
.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 + ")");
//Read the data
d3.csv("https://raw.githubusercontent.com/karinanguyen/uyghurs/main/data/heatmap_data2.csv", function(data) {
// Labels of row and columns -> unique identifier of the column called 'group' and 'variable'
var myGroups = d3.map(data, function(d){return d.year;}).keys()
var myVars = d3.map(data, function(d){return d.country;}).keys()
// Build X scales and axis:
var x = d3.scaleBand()
.range([ 0, width ])
.domain(myGroups)
.padding(0.05);
svg.append("g")
.style("font-size", 15)
.style("font-family", "Georgia")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x).tickSize(0))
.select(".domain").remove()
// Build Y scales and axis:
var y = d3.scaleBand()
.range([ height, 0 ])
.domain(myVars)
.padding(0.5);
svg.append("g")
.style("font-size", 8)
.style("font-family", "Georgia")
.call(d3.axisLeft(y).tickSize(0))
.select(".domain").remove()
// Build color scale
// var myColor = d3.scaleSequential()
// .interpolator( d3.interpolateGreys)
// .domain([0, 100])
var myColor = d3.scaleLinear()
.range(["#DED7F4", "#4D3B6C"])
.domain([1,100])
// create a tooltip
var tooltip = d3.select("#my_dataviz")
.append("div")
.style("opacity", 0)
.attr("class", "tooltip")
.style("background-color", "white")
.style("border", "solid")
.style("border-width", "1px")
.style("border-radius", "2px")
.style("padding", "5px")
.style("position", "absolute")
// Three function that change the tooltip when user hover / move / leave a cell
var mouseover = function(d) {
tooltip
.style("opacity", 1)
d3.select(this)
.style("stroke", "black")
.style("opacity", 1)
}
var mousemove = function(d) {
tooltip
.html(d.country + " " + d.uyghur_count)
.style("left", (d3.event.pageX+20) + "px")
.style("top", (d3.event.pageY-30) + "px")
}
var mouseleave = function(d) {
tooltip
.style("opacity", 0)
d3.select(this)
.style("stroke", "none")
.style("opacity", 0.8)
}
// add the squares
svg.selectAll("rect")
.data(data, function(d) {return d.year+':'+d.country;})
.enter()
.append("rect")
.attr("x", function(d) { return x(d.year) })
.attr("y", function(d) { return y(d.country) })
.attr("rx", 3)
.attr("ry", 3)
.attr("width", x.bandwidth())
.attr("height", y.bandwidth())
.style("fill", function(d) { return myColor(d.uyghur_count)})
.style("stroke-width", 2)
.style("stroke", "none")
.style("opacity", 0.8)
.on("mouseover", mouseover)
.on("mousemove", mousemove)
.on("mouseleave", mouseleave)
})
function conversor(d){
d.country = +d.country;
d.year = +d.year;
d.uyghur_count = +d.uyghur_count;
return d;
}
// Add title to graph
// svg.append("text")
// .attr("x", 20)
// .attr("y", 10)
// .attr("text-anchor", "left")
// .style("font-size", "18px")
// .text("Counts of 'Uyghurs' mentions from major media sources from countries over the period of 2017-2021");
// Add subtitle to graph
svg.append("text")
.attr("x", 10)
.attr("y", -10)
.attr("text-anchor", "left")
.style("font-size", "14px")
.style("fill", "grey")
.style("max-width", 400)
.text(" Counts of 'Uyghurs' mentions from major media sources from countries over the period of 2017-2021.");
// svg.append("text")
// .attr("x", 10)
// .attr("y", -20)
// .attr("text-anchor", "left")
// .style("font-size", "14px")
// .style("fill", "grey")
// .style("max-width", 400)
// .text(" Hey.");