d3 tributary reusable bar chart

_.md

An inlet to tributary

config.json

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freq.tsv

freq2.tsv

inlet.js

//http://bost.ocks.org/mike/chart/
//adding style.css to tributary magically
//gets applied here

var data = tributary.freq;
//convert strings to numbers
data.forEach(function(d) {
    d.frequency = +d.frequency;
  });

var data2 = tributary.freq2;
//convert strings to numbers
data2.forEach(function(d) {
    d.frequency = +d.frequency;
  });
//console.log(data)

var margin = {top: 20, right: 20, bottom: 30, left: 40},
    width = 446 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

var svg = d3.select("svg");

var g = svg.append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

var g2 = svg.append("g")
    .attr("transform", "translate(" + 600 + "," + margin.top + ")");

var bars = barChart()
	.data(data)
	.width(378)
.height(322);

bars(g);

bars.data(data2)
.width(628)

bars(g2);

function barChart(){
  //default chart parameters 
  var data=[];
   var width =300;
   var height=300;
    
   var chart = function(g){
  
var formatPercent = d3.format(".0%");

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")
    .tickFormat(formatPercent);

  x.domain(data.map(function(d) { return d.letter; }));
  y.domain([0, d3.max(data, function(d) { return d.frequency; })]);

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

  g.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");

  g.selectAll(".bar")
      .data(data)
    .enter().append("rect")
      .attr("class", "bar")
      .attr("x", function(d) { return x(d.letter); })
      .attr("width", x.rangeBand())
      .attr("y", function(d) { return y(d.frequency); })
      .attr("height", function(d) { return height - y(d.frequency); });
  }
  
  chart.data = function(value){
  if (!arguments.length) return data;
    data = value;
    return chart;
  }
  chart.width = function(value){
  if (!arguments.length) return width;
    width = value;
    return chart;
  }
  chart.height = function(value){
  if (!arguments.length) return height;
    height = value;
    return chart;
  }
  
  
  return chart;
}

style.css

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

.bar {
  fill: steelblue;
}

.x.axis path {
  display: none;
}