D3 Examples - Findings graph

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<Doctype html>
  
<style>
​
  .axis path,
.axis line {
  fill: none;
  stroke: #D4D8DA;
  stroke-width: 1px;
  shape-rendering: crispEdges;
}
.x path {
    display: none;
}
.toolTip {
    position: absolute;
  display: none;
  max-width: 200px;
  height: auto;
  background: white;
  border-radius: 20px;
  padding: 14px;
    border: 1px solid #777777;
  text-align: center;
    font-family: sans-serif
}
    
    p {
    color: #3f3f3f;
    font-size: 20px;
    line-height: 24px;
    font-weight: 300;
    margin-top: 20px;
    margin-bottom: 20px;
}
    
    body {
    font-family: 'PT Sans', sans-serif;
    color: #3f3f3f;
    margin-left: 100px;
    margin-right: 100px;
    font-size: 16px;
    font-weight: 300;
}
​
 #tooltip.hidden {
      display: none;
    }    
    
 .legend {
    font-size: 12px;
  }
  rect {
    stroke-width: 2;
  }
  
  </style>
  
<body>
 
<script src="https://d3js.org/d3.v4.min.js"></script>
  
<svg width="960" height="500"></svg>  
  
<script>
 
var svg = d3.select("svg"),
    margin = {top: 10, right: 100, bottom: 30, left: 150},
    width = +svg.attr("width") - margin.left - margin.right,
    height = +svg.attr("height") - margin.top - margin.bottom;
  
var tooltip = d3.select("body").append("div").attr("class", "toolTip");
  
var x = d3.scaleLinear().range([0, width]);
var y = d3.scaleBand().range([height, 0]);
​
var g = svg.append("g")
        .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
​
var color = d3.scaleOrdinal()
    .range(["#99CC00"]);
    
d3.csv("Data.csv", function(error, data) {
  if (error) throw error;
  data.forEach(function(d) {
    d.Total = +d.Total;
  });
​
  
    x.domain([0, d3.max(data, function(d) { return d.Total; })]);
    y.domain(data.map(function(d) { return d.Risk; })).padding(0.1);
​
    g.append("g")
        .attr("class", "x axis")
        .attr("transform", "translate(0," + height + ")");
​
    g.append("g")
        .attr("class", "y axis")
        .style("font-size", "15px")
        .call(d3.axisLeft(y));
        
​
    g.selectAll(".bar")
        .data(data)
      .enter().append("rect")
        .attr("class", "bar")
        .attr("x", 0)
        .attr("height", y.bandwidth())
        .attr("y", function(d) { return y(d.Risk); })
        .attr("width", function(d) { return x(d.Total); })
        .attr("fill", function(d) { return color(d.Domain); })
        .on("mouseover", function(d){
            tooltip
              .style("left", d3.event.pageX - 50 + "px")
              .style("top", d3.event.pageY - 25 + "px")
              .style("display", "inline-block")
                .html("<b>" + d.Total + " students at risk" + "</b>" + "<br>" +
                      "<br>" +
                      "<i>" + d.Risk +": " + "</i>" +
                      "<br>" +
                      d.Description);
        })
            .on("mouseout", function(d){ tooltip.style("display", "none");});
});
   
</script> 
​
  </body>  
​
​
    