Femmes élues au Québec

Visualization for radio-canada.ca.

Adapted from /d3noob/6eb506b129f585ce5c8a, removed the x and y lines for the target showing the values.

<!DOCTYPE html>
<meta charset="utf-8">
<style> /* set the CSS */

body { font: 12px Arial;}

h1 {
    font-size: 20px;
    margin: 0;
    color: #cc0000;
  }

p {
    font-size: 11px;
    margin: 10px 0 0 0;
  }

path { 
    stroke: firebrick;
    stroke-width: 2;
    fill: none;
}

.axis path,
.axis line {
    fill: none;
    stroke: grey;
    stroke-width: 1;
    shape-rendering: crispEdges;
}

</style>
<body>

<h1>Combien de femmes élues au Québec?</h1>

<script src="https://d3js.org/d3.v3.min.js"></script>

// Set the dimensions of the canvas / graph
var margin = {top: 30, right: 60, bottom: 20, left: 30},
    width = 635 - margin.left - margin.right,
    height = 250 - margin.top - margin.bottom;

// Parse the date / time
var parseDate = d3.time.format("%d/%m/%Y").parse,
    formatDate = d3.time.format("%d/%m/%y"),
    bisectDate = d3.bisector(function(d) { return d.date; }).left;

// Set the ranges
var x = d3.time.scale().range([0, width]);
var y = d3.scale.linear().range([height, 0]);

// Define the axes
var xAxis = d3.svg.axis().scale(x)
    .orient("bottom").ticks(5);

var yAxis = d3.svg.axis().scale(y)
    .orient("left").tickValues([10, 20, 30, 40]).outerTickSize(0);

// Define the line
var valueline = d3.svg.line()
    .x(function(d) { return x(d.date); })
    .y(function(d) { return y(d.femmesElues); });
    
// Adds the svg canvas
var 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 + ")");

var lineSvg = svg.append("g");

var focus = svg.append("g") 
    .style("display", "none");

// Get the data
d3.csv("femmes_elues.csv", function(error, data) {
    data.forEach(function(d) {
        d.date = parseDate(d.date);
        d.femmesElues = +d.femmesElues;
    });

// Scale the range of the data
    x.domain(d3.extent(data, function(d) { return d.date; }));
    y.domain([0, d3.max(data, function(d) { return d.femmesElues; })]);

// Add the valueline path.
    lineSvg.append("path")
        .attr("class", "line")
        .attr("d", valueline(data));

// Add the X Axis
    svg.append("g")
        .attr("class", "x axis")
        .attr("transform", "translate(0," + height + ")")
        .call(xAxis);

// Add the Y Axis
    svg.append("g")
        .attr("class", "y axis")
        .call(yAxis);
/*
   // append the x line
    focus.append("line")
        .attr("class", "x")
        .style("stroke", "grey")
        .style("stroke-dasharray", "3,3")
        .style("opacity", 0.5)
        .attr("y1", 0)
        .attr("y2", height);
*/
    // append the y line
    focus.append("line")
        .attr("class", "y")
        .style("stroke", "grey")
        .style("stroke-dasharray", "3,3")
        .style("opacity", 0)  // mis à zéro pour enlever la ligne pointillé
        .attr("x1", width)
        .attr("x2", width);

// append the circle at the intersection
    focus.append("circle")
        .attr("class", "y")
        .style("fill", "none")
        .style("stroke", "grey")
        .attr("r", 4);

// place the value at the intersection
    focus.append("text")
        .attr("class", "y1")
        .style("stroke", "white")
        .style("stroke-width", "3.5px")
        .style("opacity", 1)
        .attr("dx", -50)
        .attr("dy", -10);
    focus.append("text")
        .attr("class", "y2")
        .attr("dx", -50)
        .attr("dy", -10);

// place the date at the intersection
    focus.append("text")
        .attr("class", "y3")
        .style("stroke", "white")
        .style("stroke-width", "3.5px")
        .style("opacity", 1)
        .attr("dx", -50)
        .attr("dy", -25);
    focus.append("text")
        .attr("class", "y4")
        .attr("dx", -50)
        .attr("dy", -25);
    
    // append the rectangle to capture mouse
    svg.append("rect")
        .attr("width", width)
        .attr("height", height)
        .style("fill", "none")
        .style("pointer-events", "all")
        .on("mouseover", function() { focus.style("display", null); })
        .on("mouseout", function() { focus.style("display", "none"); })
        .on("mousemove", mousemove);

function mousemove() {
    var x0 = x.invert(d3.mouse(this)[0]),
        i = bisectDate(data, x0, 1),
        d0 = data[i - 1],
        d1 = data[i],
        d = x0 - d0.date > d1.date - x0 ? d1 : d0;

focus.select("circle.y")
        .attr("transform",
              "translate(" + x(d.date) + "," +
                             y(d.femmesElues) + ")");

focus.select("text.y1")
        .attr("transform",
              "translate(" + x(d.date) + "," +
                             y(d.femmesElues) + ")")
        .text("Femmes élues : " + d.femmesElues);

focus.select("text.y2")
        .attr("transform",
              "translate(" + x(d.date) + "," +
                             y(d.femmesElues) + ")")
        .text("Femmes élues : " + d.femmesElues);

focus.select("text.y3")
        .attr("transform",
              "translate(" + x(d.date) + "," +
                             y(d.femmesElues) + ")")
        .text("Élection : " + formatDate(d.date));

focus.select("text.y4")
        .attr("transform",
              "translate(" + x(d.date) + "," +
                             y(d.femmesElues) + ")")
        .text("Élection : " + formatDate(d.date));

focus.select(".x")
        .attr("transform",
              "translate(" + x(d.date) + "," +
                             y(d.femmesElues) + ")")
                   .attr("y2", height - y(d.femmesElues));

focus.select(".y")
        .attr("transform",
              "translate(" + width * -1 + "," +
                             y(d.femmesElues) + ")")
                   .attr("x2", width + width);
  }

});

</script>

<p>Élections provinciales générales de 1962 à aujourd'hui. Source: <a href="https://www.assnat.qc.ca/fr/patrimoine/femmes.html">Assemblée nationale du Québec</a></p>

</body>

Modified http://d3js.org/d3.v3.min.js to a secure url

https://d3js.org/d3.v3.min.js