README.md

## README.md

      
          Raw
        
        
              README.md
            
          
    A simple generator function for a D3.js bar graph with an options parameter. 

  
## index.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Updatable Charts (2 of 4)</title>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
    <style>
        body {
            padding: 20px 0 0 10px;
        }
    </style>
</head>
<body>
<div id="weatherHistory"></div>
<br>
<div id="runningHistory"></div>
<script>

    var milesRun = [2, 5, 4, 1, 2, 6, 5];
    var highTemperatures = [77, 71, 82, 87, 84, 78, 80, 84, 86, 72, 71, 68, 75, 73, 80, 85, 86, 80];

    function drawChart(dom, data, options) {
        var width = options.width || 800;
        var height = options.height || 200;
        var barPadding = options.barPadding || 1;
        var fillColor = options.fillColor || 'steelblue';

        var barSpacing = height / data.length;
        var barHeight = barSpacing - barPadding;
        var maxValue = d3.max(data);
        var widthScale = width / maxValue;

        d3.select(dom).append('svg')
                .attr('height', height)
                .attr('width', width)
                .selectAll('rect')
                .data(data)
                .enter()
                .append('rect')
                .attr('y', function (d, i) { return i * barSpacing })
                .attr('height', barHeight)
                .attr('x', 0)
                .attr('width', function (d) { return d*widthScale})
                .style('fill', fillColor);
    }

    var weatherOptions = {fillColor: 'coral'};
    drawChart('#weatherHistory', highTemperatures, weatherOptions);

    var runningOptions = {barPadding: 2};
    drawChart('#runningHistory', milesRun, runningOptions);


</script>
</body>
</html>

## thumbnail.png

      
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              thumbnail.png