Information Visualization Implementation (VI1)

Name: Surbhi Shankar UIN: 01012632

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

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

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R image

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")

<!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>

https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js