Projet_DataViz_Histogramme

This example is out-of-date; I prefer this newer histogram example that places the tick marks between bars. However, the implementation still stands as an example of the reusable chart module pattern.

forked from mbostock's block: Histogram Chart

<!DOCTYPE html>
<meta charset="utf-8">
<style>
.bar rect {
  fill: steelblue;
}

.bar text {
  fill: #fff;
  font: 10px sans-serif;
}

.axis text {
  font: 10px sans-serif;
}

.axis path, .axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}

</style>
<svg width="960" height="500"></svg>
<body>
<script src="//d3js.org/d3.v4.min.js"></script>
<script src="histogram-chart.js"></script>
<script>
 
	var formatCount = d3.format(",.0f");

var svg = d3.select("svg"),
    		margin = {top: 10, right: 30, bottom: 30, left: 30},
    		width = +svg.attr("width") - margin.left - margin.right,
   			height = +svg.attr("height") - margin.top - margin.bottom,
     		g = svg.append("g").attr("transform",
                                 "translate(" + margin.left + "," +
                                 									margin.top + ")");

var x = d3.scaleLinear()
			.domain([0,12])
    	.rangeRound([0, width]);
  
d3.csv("tgv_annees.csv", function(error, data) {
  
  // ! \\ annee et trajet à définir via curseur et matrice
  var filtre = data.filter( function(d) {
		return ((d.annee == 2015) && (d.source == 'TOULOUSE MATABIAU') && (d.target == 'PARIS MONTPARNASSE')) ;
	});
  console.log(filtre);
  
var y = d3.scaleLinear()
    			.domain([0, d3.max(filtre, function(d) { return d.weight; })])
    			.range([height, 0]);

var bar = g.selectAll(".bar")
  .data(filtre)
  .enter().append("g")
    .attr("class", "bar")
    .attr("transform", function(d) { return "translate(" + x(d.mois-1) + "," + y(d.weight) + ")"; });

bar.append("rect")
    .attr("x", 1)
    .attr("width", x(filtre[0].mois) - x(filtre[0].mois-1) - 1)
    .attr("height", function(d) { return height - y(d.weight); });

bar.append("text")
    .attr("dy", ".75em")
    .attr("y", 6)
    .attr("x", (x(filtre[0].mois) - x(filtre[0].mois-1)) / 2)
    .attr("text-anchor", "middle")
    .text(function(d) { return formatCount(d.weight); });

var scaleSize = 12;
      var nameScale = d3.scaleBand()
      									.domain(["Janvier", "Fevrier", "Mars", "Avril", "Mai", "Juin", "Juillet", "Aout", "Septembre", "Octobre", "Novembre", "Decembre"])
      									.rangeRound([0,width]);

xAxis = d3.axisBottom(nameScale).tickSize(4);
      
g.append("g")
    .attr("class", "axis axis--x")
    .attr("transform", "translate(0," + height + ")")
    .call(xAxis);
  
  g.append("g")
	  .attr("fill","white")
	  .call(d3.axisLeft(y))
			.append("text")
			.attr("transform", "translate(20,0)")
			.style("text-anchor", "start") 
			.attr("fill","Black")
			.text("régularité");

});
  
</script>

https://d3js.org/d3.v4.min.js