HW1 Chart1

<!DOCTYPE html>
<meta charset="utf-8">

.grid path {
  stroke-width: 0;
}
</style>
<svg width="960" height="500"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
var svg = d3.select("svg"),
    margin = {top: 40, right: 20, bottom: 50, left: 60},
    width = +svg.attr("width") - margin.left - margin.right,
    height = +svg.attr("height") - margin.top - margin.bottom;
var x = d3.scaleBand().rangeRound([0, width]).padding(0.1),
    y = d3.scaleLinear().rangeRound([height, 0]);
var g = svg.append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
  
  function make_y_gridlines() {   
    return d3.axisLeft(y)
        .ticks(12)
}
d3.tsv("data.tsv", function(d) {
  console.log();
  d.Count = +d.Count;
  console.log(d.Count)
  return d;
}, function(error, data) {
  if (error) throw error;
  x.domain(data.map(function(d) { return d.District; }));
  y.domain([0, d3.max(data, function(d) { return d.Count; })]);
  g.append("g")
      .attr("class", "axis axis--x")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x));
  
  g.append("text")      // text label for the x axis
        .attr("x", (width / 2) )
        .attr("y", height + margin.bottom )
        .style("text-anchor", "middle")
        .text("District");
  
  
  g.append("g")
      .attr("class", "axis axis--y")
      .call(d3.axisLeft(y))
  
    g.append("g")
  		.attr("class", "grid")
  		.call(make_y_gridlines()
           .tickSize(-width)
           .tickFormat(""))

g.append("text")
    .attr("y", 0- margin.left)
		.attr("x", 0 - (height/2))
    .attr("transform", "rotate(-90)")
    .attr("dy", "0.71em")
    .attr("fill", "#000")
    .text("Number of Calls");
    g.append("text")
        .attr("x", (width / 2))             
        .attr("y", 0 - (margin.top / 2))
        .attr("text-anchor", "middle")  
        .style("font-size", "20px") 
    		.style("font-family", "Times New Roman")
        .text("911 Calls Per District");
  g.selectAll(".bar")
    .data(data)
    .enter().append("rect")
      .attr("class", "bar")
      .attr("x", function(d) { return x(d.District); })
      .attr("y", function(d) { return y(d.Count); })
      .attr("width", x.bandwidth())
      .attr("height", function(d) { return height - y(d.Count); });
});
</script>

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