DataClips + D3.js Chart

Simple demonstration of consuming Heroku DataClips with D3.js.

Data source: https://dataclips.heroku.com/vgyygvzqtezwpmwpcmmjlluamjlk (.json)

<!DOCTYPE html>
<meta charset="utf-8">
<style>
  .axis path,
  .axis line {
    fill: none;
    stroke: #000;
    shape-rendering: crispEdges;
  }
  .dot {}
</style>
<script src="https://d3js.org/d3.v3.min.js"></script>
<body>
  <script>
    // var resource = 'https://dataclips.heroku.com/vgyygvzqtezwpmwpcmmjlluamjlk.json';
    // Replaced with local copy (CORS)
    
    var format = d3.time.format("%Y-%m-%d"),
        margin = {top: 20, right: 20, bottom: 30, left: 40},
        width = 960 - margin.left - margin.right,
        height = 500 - margin.top - margin.bottom;
        
    var x = d3.time.scale()
                    .range([0, width]);
    var y = d3.scale.linear()
                    .range([height, 0]);
                    
    var color = d3.scale.category10();
    
    var xAxis = d3.svg.axis()
                    .scale(x)
                    .orient("bottom")
                    .ticks(d3.time.months, 1)
                    .tickFormat(d3.time.format('%b'))
                    .tickSize(0)
                    .tickPadding(10);
   
    var yAxis = d3.svg.axis()
                    .scale(y)
                    .orient("left")
                    .tickPadding(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.json('sample.json', function(error, data) {
      console.log(data)
      data.values.forEach(function(d) {
        d.date = format.parse(String(d[0]).substring(0, 10));
        d.amount = d[1];
        console.log("Spent $" + d.amount + " on " + d.date);
      });
      x.domain([format.parse(String(data.values[0][0]).substring(0, 10)), d3.time.day.offset(format.parse(String(data.values[data.values.length - 1][0]).substring(0, 10)), 1)]).nice();
      
      y.domain([0, 1500])
      // d3.max(data.values, function(d) { return d.amount; })
      // y.domain(d3.extent(data.values, function(d){ return d.amount; })).nice();
      
      svg.append("g")
          .attr("class", "x axis")
          .attr("transform", "translate(0," + height + ")")
          .call(xAxis)
          .append("text")
            .attr("class", "label")
            .attr("x", width)
            .attr("y", -6)
            .style("text-anchor", "end")
            .text(data.fields[0]);
            
      svg.append("g")
          .attr("class", "y axis")
          .call(yAxis)
          .append("text")
            .attr("class", "label")
            .attr("transform", "rotate(-90)")
            .attr("y", 6)
            .attr("dy", ".71em")
            .style("text-anchor", "end")
            .text(data.fields[1]);
      
      svg.selectAll("circle.dot")
          .data(data.values)
          .enter()
          .append("circle")
            .attr("class", "dot")
            .attr("r", 10)
            .attr("cx", function(d) { return x(d.date); })
            .attr("cy", function(d) { return y(d.amount); })
            .attr("fill", "red")
            .attr("stroke-width", 0);
    })
  
  </script>
</body>

Modified http://d3js.org/d3.v3.min.js to a secure url

https://d3js.org/d3.v3.min.js