README.md

## README.md

      
          Raw
        
        
              README.md
            
          
    This fork of Mike Bostock's simple bar chart shows the favorite API functions of d3unconf(2015) attendees.

forked from mbostock's block: Simple Bar Chart

  
## data.tsv

        
        api
        frequency

        
        selection.data()
        3

        
        d3.ascending()
        1

        
        d3.csv()
        2

        
        d3.dispatch()
        1

        
        d3.interpolate()
        3

        
        d3.json()
        1

        
        d3.layout.chord()
        1

        
        d3.layout.force()
        5

        
        d3.nest()
        8

        
        d3.selectAll()
        1

        
        d3.svg.line()
        1

        
        d3.transition()
        8

        
        selection.enter()
        2

        
        selection.transition()
        1

        
        d3.scale()
        7

        
        d3.select()
        1

        
        d3.unconf()
        1

        
        x.centroid()
        1

        
        d3.layout.x()
        2

        
        d3.mean()
        1

        
        d3.svg.x()
        1

        
        d3.timer()
        1

        
        d3.svg.brush()
        1

        
        d3.geo()
        1

        
        d3.geo.projection()
        4

        
        d3.geom.delaunay()
        1

        
        d3.geom.quadtree()
        1

        
        d3.geom.voronoi()
        3

        
        d3.map()
        1

        
        d3.range()
        1

## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>

.bar {
  fill: steelblue;
}

.bar:hover {
  fill: brown;
}

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

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

.x.axis path {
  display: none;
}

</style>
<body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
<script>

var margin = {top: 20, right: 20, bottom: 130, left: 40},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

var x = d3.scale.ordinal()
    .rangeRoundBands([0, width], .1);

var y = d3.scale.linear()
    .range([height, 0]);

var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom");

var yAxis = d3.svg.axis()
    .scale(y)
    .orient("left")
    .ticks(10);

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 + ")");

d3.tsv("data.tsv", type, function(error, data) {
  if (error) throw error;

  data.sort(function(a,b) {return b.frequency - a.frequency;})
  x.domain(data.map(function(d) { return d.api; }));
  y.domain([0, d3.max(data, function(d) { return d.frequency; })]);

  svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis);

  svg.append("g")
      .attr("class", "y axis")
      .call(yAxis)
    .append("text")
      .attr("transform", "rotate(-90)")
      .attr("y", 6)
      .attr("dy", ".71em")
      .style("text-anchor", "end")
      .text("Frequency");

  svg.selectAll(".bar")
      .data(data)
    .enter().append("rect")
      .attr("class", "bar")
      .attr("x", function(d) { return x(d.api); })
      .attr("width", x.rangeBand())
      .attr("y", function(d) { return y(d.frequency); })
      .attr("height", function(d) { return height - y(d.frequency); });

  d3.selectAll(".x.axis .tick text")
    .attr("transform","translate(-12,4)rotate(290)")
    .style("text-anchor","end");
});


function type(d) {
  d.frequency = +d.frequency;
  return d;
}


</script>