D3 Examples - Information Visualization Implementation (VI1)

Information Visualization Implementation (VI1)

Name: Surbhi Shankar UIN: 01012632

Working through the examples from Scott Murray's tutorial at http://alignedleft.com/tutorials/d3/

Image and code from http://www.harding.edu/fmccown/r/

Embedding an image in Markdown:

Embedding R code in Markdown:

dataset <- c(25, 18, 14, 2, 10, 15, 20, 10, 12, 7, 5, 26, 11, 8, 5, 25, 14, 23, 19, 14, 11, 4, 7, 11, 23, 12, 7, 18, 10, 4, 8, 25, 9, 3) barplot(dataset, col="red")

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<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8">
        <title>D3 Demo: Bar chart with random values</title>
        <script type="text/javascript" src=" https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>
        <style type="text/css">
        
            div.bar {
                display: inline-block;
                width: 20px;
                height: 75px;   /* Gets overriden by D3-assigned height below */
                margin-right: 2px;
                background-color: teal;
            }
        
        </style>
    </head>
    <body>
        <script type="text/javascript">
​
            var dataset = [];                        //Initialize empty array
            for (var i = 0; i < 25; i++) {           //Loop 25 times
                var newNumber = Math.round(Math.random() * 30);  //New random integer (0-30)
                dataset = dataset.concat(newNumber); //Add new number to array
            }
            
            d3.select("body").selectAll("div")
                .data(dataset)
                .enter()
                .append("div")
                .attr("class", "bar")
                .style("height", function(d) {
                    var barHeight = d * 5;
                    return barHeight + "px";
                });
            
        </script>
    </body>
</html>
    