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<script>
var margin = {top: 5, right: 20, bottom: 40, left: 80},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
// setup x
var xValue = function(d) { return d.Text;}, // data -> value
xScale = d3.scale.linear().range([0, width]), // value -> display
xMap = function(d) { return xScale(xValue(d));}, // data -> display
xAxis = d3.svg.axis().scale(xScale).orient("bottom");
// setup y
var yValue = function(d) { return d["Energie"];}, // data -> value
yScale = d3.scale.linear().range([height, 0]), // value -> display
yMap = function(d) { return yScale(yValue(d));}, // data -> display
yAxis = d3.svg.axis().scale(yScale).orient("left");
// setup fill color
var cValue = function(d) { return d.Nom;},
color = d3.scale.ordinal().range(["#32CD32", "#FF00FF", "#FFA500", "#1E90FF", "#FFD700", "#ff7f0e","#FF0000"]); //d3.scale.category10();
// add the graph canvas to the body of the webpage
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 + ")");
// add the tooltip area to the webpage
var tooltip = d3.select("body").append("div")
.attr("class", "tooltip")
.style("opacity", 0);
// load data
d3.csv("data.txt", function(error, data) {
// change string (from CSV) into number format
data.forEach(function(d) {
d.Text = +d.Text;
d["Energie"] = +d["Energie"];
// console.log(d);
});
// don't want dots overlapping axis, so add in buffer to data domain
xScale.domain([d3.min(data, xValue)-1, d3.max(data, xValue)+1]);
yScale.domain([d3.min(data, yValue)-1, d3.max(data, yValue)+1]);
// x-axis
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.append("text")
.attr("class", "label")
.attr("x", width)
.attr("y", 30)
.style("text-anchor", "end")
.text("Temperature Exterieure (Degre C)");
// y-axis
svg.append("g")
.attr("class", "y axis")
.call(yAxis)
.append("text")
.attr("class", "label")
.attr("transform", "rotate(-90)")
.attr("y", -75)
.attr("dy", ".71em")
.style("text-anchor", "end")
.text("Energie (Kwh/Jour)");
// draw dots
svg.selectAll(".dot")
.data(data)
.enter().append("circle")
.attr("class", "dot")
.attr("r", 4)
.attr("cx", xMap)
.attr("cy", yMap)
.style("fill", function(d) { return color(cValue(d));})
.on("mouseover", function(d) {
tooltip.transition()
.duration(200)
.style("opacity", 100);
tooltip.html(d["Nom"] + "<br/> (" + xValue(d)
+ ", " + yValue(d) + ")") // je souhaiterais ajouter ici ajouter l'affichage de date du point
.style("left", (d3.event.pageX + 5) + "px")
.style("top", (d3.event.pageY - 28) + "px");
})
.on("mouseout", function(d) {
tooltip.transition()
.duration(1000)
.style("opacity", 0);
});
// draw legend
var legend = svg.selectAll(".legend")
.data(color.domain())
.enter().append("g")
.attr("class", "legend")
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
// draw legend colored rectangles
legend.append("rect")
.attr("x", width)
.attr("width", 18)
.attr("height", 18)
.style("fill", color);
// draw legend text
legend.append("text")
.attr("x", width - 5)
.attr("y", 9)
.attr("dy", ".35em")
.style("text-anchor", "end")
.style("fill", color)
.text(function(d) { return d;})
});
</script> |
