Barley Yields Simple Multiples

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
    <style type="text/css">
      /*css to go here*/
      .axis text {
        font: 10px sans-serif;
      }

.axis path {
        fill: none;
      }
      .axis line {
        stroke-width:1px;
        stroke: #ccc;
        stroke-dasharray: 2px 2px;
      }
      rect.sub-plot {
        stroke: grey;
        fill: none;
      }
      rect.yield {
        stroke: steelblue;
        stroke-width: 1;
        fill: none;
      }
      line.yield {
        stroke: red;
        stroke-width: 2;
      }
      line.wiskers-top, line.wiskers-bottom {
        stroke: steelblue;
        stroke-width: 1;
      }
      text.site-text {
        font: 12px sans-serif;
      }
    </style>
  </head>
  <body>
    <div id="viz"></div>
    <script>
      //JS to go here
      d3.csv("barley-yields.csv", function(error, data) {
        data.forEach(function(d) {
          d.year = +d.year;
          d.yield = +d.yield;
        });

var margin = {top: 20, right: 20, bottom: 50, left: 50},
            width = 960 - margin.left - margin.right,
            height = 500 - margin.top - margin.bottom;

var svg = d3.select("#viz")
                      .append("svg")
                      .attr({
                        width: width + margin.left + margin.right,
                        height: height + margin.top + margin.bottom
                      })
                      .append("g")
                      .attr("transform", "translate(" + [margin.left, margin.top] + ")");

var xScale = d3.scale.ordinal()
                        .rangeRoundBands([0, width/3], 0.7, 0.5)
                        .domain(data.map(function(d) { return d.year; }));

var yScale = d3.scale.linear()
                        .range([height / 2, 0])
                        .domain([0, d3.max(data, function(d) { return d.yield; })]);

var sites = svg.selectAll("g.site").data(siteGroups);

var chartHeight = height / 2,
            chartWidth = width / 3;

sites.enter()
          .append("g")
          .classed("site", true)
          .attr("transform", function(d, i) {
            var x = (i % 3) * chartWidth;
            var y = parseInt(i/3) * chartHeight;
            return "translate(" + [x, y] + ")";
          });

sites.each(function(d, i) {

if (i % 3 == 0) {
            // Build y Axis
            var yAxis = d3.svg.axis()
                          .scale(yScale)
                          .orient("left")
                          .tickSize(-width);

d3.select(this)
              .append("g")
              .classed("y axis", true)
              .call(yAxis);
          } else if (i%3 == 2) {
            // Build y Axis on Right
            var yAxis = d3.svg.axis()
                          .scale(yScale)
                          .orient("right");

d3.select(this)
              .append("g")
              .classed("y axis", true)
              .attr("transform", "translate(" + [chartWidth, 0] + ")")
              .call(yAxis);
          }

if (i <= 2) {
            // Build x Axis
            var xAxis = d3.svg.axis()
                          .scale(xScale)
                          .orient("top");

d3.select(this)
              .append("g")
              .classed("x axis", true)
              .call(xAxis);
          } else {
            // Build x Axis
            var xAxis = d3.svg.axis()
                          .scale(xScale)
                          .orient("bottom")
                          .tickSize(-height);

d3.select(this)
              .append("g")
              .classed("x axis", true)
              .attr("transform", "translate(" + [0, chartHeight] + ")")
              .call(xAxis);
          }

d3.select(this)
            .append("rect")
            .classed("sub-plot", true)
            .attr({
              x: 0,
              y: 0,
              height: chartHeight,
              width: chartWidth
            });

d3.select(this)
            .append("text")
            .classed("site-text", true)
            .attr({
              x: 5,
              y: 20
            })
            .text(d.key)

d3.select(this)
            .selectAll("rect.yield")
            .data(d.values)
            .enter()
              .append("rect")
              .classed("yield", true)
              .attr({
                x: function(d) { return xScale(d.key); },
                y: function(d) { return yScale(d.values.p75); },
                height: function(d) { return yScale(d.values.p25) - yScale(d.values.p75); },
                width: function(d) { return xScale.rangeBand(); }
              });

d3.select(this)
            .selectAll("line.yield")
            .data(d.values)
            .enter()
              .append("line")
              .classed("yield", true)
              .attr({
                x1: function(d) { return xScale(d.key); },
                y1: function(d) { return yScale(d.values.p50); },
                x2: function(d) { return xScale(d.key) + xScale.rangeBand(); },
                y2: function(d) { return yScale(d.values.p50); }
              });

// Add Wiskers
          d3.select(this)
            .selectAll("line.wiskers-top")
            .data(d.values)
            .enter()
              .append("line")
              .classed("wiskers-top", true)
              .attr({
                x1: function(d) { return xScale(d.key) + xScale.rangeBand()/2; },
                y1: function(d) { return yScale(d.values.p75); },
                x2: function(d) { return xScale(d.key) + xScale.rangeBand()/2; },
                y2: function(d) { return yScale(d.values.p95); }
              })

d3.select(this)
            .selectAll("line.wiskers-bottom")
            .data(d.values)
            .enter()
              .append("line")
              .classed("wiskers-bottom", true)
              .attr({
                x1: function(d) { return xScale(d.key) + xScale.rangeBand()/2; },
                y1: function(d) { return yScale(d.values.p25); },
                x2: function(d) { return xScale(d.key) + xScale.rangeBand()/2; },
                y2: function(d) { return yScale(d.values.p05); }
              });
        });
      });
    </script>
  </body>
</html>

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