Organic Lemon Prices

forked from digambara's block: Organic Lemon Prices

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
  </style>
</head>

<body>
  <svg width=800 height=400></svg>
  <script>
    
    var width = 700;
    var height = 300;
    var margin = {top: 20, bottom: 20, left: 40, right: 20};
    
    // dataset of commodity prices across time
    d3.csv('midwest.csv', (err, data) => {

// clean the data
      data.forEach(d => {
        
        d.date = d3.timeParse("%Y%m%d")(d.Date);
        d.date = new Date(d.Date); // x
        
        d.price = ++d["Weighted Avg Price"]; // y
        
      });
      
      // scales
      var xExtent = d3.extent(data, d=> d.date);    
      var xScale = d3.scaleTime()
      	.domain(xExtent)
      	.range([margin.left, width-margin.right]);      
      var yExtent = d3.extent(data, d=> d.price);
      var yScale = d3.scaleLinear()
      	.domain(yExtent)
      	.range([height - margin.bottom, margin.top]);
      var heightScale = d3.scaleLinear()
      	.domain(yExtent)
      	.range([0, height - margin.top - margin.bottom]);
     //console.log(heightScale(6));
      
      // create the line
      var line = d3.line()
      	.x(function (d) { return xScale(d.date)})
      	.y(function (d) { return yScale(d.price)})
      	.curve(d3.curveStep);
      
      // create the rectangles
      var svg = d3.select('svg');
      
      var rect = svg.selectAll('rect')
      	.data(data)
      	.enter()
      	.append('rect')
      	.attr('width', 5)
      	.attr('height', function(d) {          
          return heightScale(d.price);
        })
      	.attr('x', function(d) { return xScale(d.date)})
      	.attr('y', function(d) { return yScale(d.price)})
      	.attr('fill', 'yellow')
      	.attr('stroke', 'white');
      svg.append("path")
      	.attr('d',line(data))
      	.attr('fill','none')
      	.attr('stroke', 'maroon')
      
      var xAxis = d3.axisBottom()
      	.scale(xScale)
      	.tickFormat(d3.timeFormat('%b%y'));
      var yAxis = d3.axisLeft()
      	.scale(yScale);
      
      svg.append('g')
      	.attr('transform', 'translate(' + [0, height - margin.bottom]+')')
      	.call(xAxis);
      svg.append('g')
      	.attr('transform', 'translate(' + [margin.left, 0] + ')')
      	.call(yAxis);
      
    });

</script>
</body>

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