interactive-vis-course/Week7/scatter_data_transition_toggle.html at gh-pages · arnicas/interactive-vis-course · GitHub

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<!DOCTYPE html>
<!-- A modified example from Scott Murray's Knight d3 course. -->

<html lang="en">
	<head>
		<meta charset="utf-8">
		<title>Scatter Transition</title>
		<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js"></script>
		<style type="text/css">

			body {
				background-color: white;
				font-family: Helvetica, Arial, sans-serif;
			}

			h1 {
				font-size: 24px;
				margin: 0;
			}

			p {
				font-size: 14px;
				margin: 10px 0 0 0;
			}

			.clicker {
				font-weight: bolder;
				color: black;
				cursor: pointer;
			}

			.buttons {
				margin-left: 500px;
				padding: 20px;
			}

			.selected {
				background-color: #eee;
			}

			.chart-title {
				font-size: 14pt;
				font-weight: bolder;
				color: black;
				margin-left: 300px;
			}

			svg {
				background-color: white;
			}

			.dots {
				fill: steelblue;
			}

			.highlighted {
				fill: orange;
			}

			.axis path,
			.axis line {
				fill: none;
				stroke: black;
				shape-rendering: crispEdges;
			}

			.axis text {
				font-family: sans-serif;
				font-size: 11px;
			}

			.xlabel{
				font-size: 15px;
				fill: gray;
			}
			.ylabel{
				font-size: 15px;
				fill: gray;
			}

		</style>
	</head>
	<body>

		<h1>Books and Toys at Home by Richest 20% and Poorest 20%</h1>

		<p>Source: World Development Indicators, <a href="http://datacatalog.worldbank.org">World Bank SOWC All Countries Update 214</a>, latest data 2013</p>

		<div class="buttons">
		<button class="clicker" id="toys">Show Toys!</button>
		<button class="clicker" id="books">Show Books!</button>
		</div>

		<p class="chart-title">Books at Home</p>

		<script type="text/javascript">


			var fullwidth = 700;
			var fullheight = 600;

			var margin = { top: 20, right: 10, bottom: 50, left: 50 };

			var width = fullwidth - margin.left - margin.right;
			var height = fullheight - margin.top - margin.bottom;


			// redo this with an object for the margin settings: var margin = {top...}

			var dotRadius = 3; // fix this to a nice value.

			// fill in the margin values here.  Also, we set domain to 0 to 100 since it's percents,
			// plus some padding room!
			var xScale = d3.scale.linear()
								.range([ 0, width ])
								.domain([-2,100]);

			// top to bottom, padding just in case
			var yScale = d3.scale.linear()
								.range([ height, 0 ])
								.domain([-2,100]);

			//  Custom tick count if you want it.
			// Create your axes here.
			var xAxis = d3.svg.axis()
							.scale(xScale)
							.orient("bottom")
							.ticks(10);  // fix this to a good number of ticks for your scale later.

			var yAxis = d3.svg.axis()
							.scale(yScale)
							.orient("left");

			var svg = d3.select("body")
						.append("svg")
						.attr("width", fullwidth)
						.attr("height", fullheight)
						.append("g")
						.attr("transform", "translate(" + margin.left + "," + margin.top + ")");

			d3.csv("data/books_toys_by_rich_poor2013.csv", draw);


		function draw(error, data) {

			if (error) {
				console.log("error reading data");
			}

				var circles = svg.selectAll("circle")
							.data(data)
							.enter()
							.append("circle");

				// Circles in SVG have cx, cy, and r attributes. x location, y location, radius.

				circles.attr("cx", function(d) {
						return xScale(+d.poorBooks);
						// return the value to use for your x scale here
					})
					.attr("cy", function(d) {
						return yScale(+d.richBooks);
					})
					.attr("class", function(d){
						// highlighting some interesting outliers
						if (d.country === "Ukraine" || d.country === "Mali" || d.country == "Morocco") {
							return "highlighted";
						}
						else {
							return "dots";
						}
					})
					.append("title")
					.text(function(d) {
						return d.country + " reports books for " + d.poorBooks + "% kids in poor areas and " + d.richBooks + "% in rich areas.";
					});


					// adding a silly intro animation to catch the eye -- using transition:
					circles.sort(function(a, b) {
							return d3.ascending(+a.urban, +b.urban);
						})
						.transition()
						.delay(function(d, i) {
							return i * 10;
						})
						.duration(500)  // milliseconds, so this is 1 second.
						.attr("r", dotRadius);

				// fix these translates so they use your margin and height width as needed
				svg.append("g")
					.attr("class", "x axis")
					.attr("transform", "translate(0," + height + ")")
					.call(xAxis);

				svg.append("g")
					.attr("class", "y axis")
					.call(yAxis);

			svg.append("text")
					.attr("class", "xlabel")
					.attr("transform", "translate(" + (width / 2) + " ," +
								(height + 20) + ")")
					.style("text-anchor", "middle")
					.attr("dy", "12")
					.text("Poorest 20%");

				svg.append("text")
					.attr("class", "ylabel")
					.attr("transform","rotate(-90) translate(" + (-height/2) + ",0)")
					.style("text-anchor", "middle")
					.attr("dy", -25)
					.text("Richest 20%");

					// make the default data button look selected
				d3.select("button#books").classed("selected", true);

				// handle the click events on the 2 buttons:

				d3.selectAll("button.clicker").on("click", function() {

					// we use the id attr on each to see which data set to use.
					var whichbutton = d3.select(this).attr("id");

					// style the buttons to show which one was clicked:
					d3.select(this).classed("selected", true);

					if (whichbutton === "toys") {
						d3.select("button#books").classed("selected", false);
					} else {
						d3.select("button#toys").classed("selected", false);
					}

					// The id is either toys or books.  We just check which
					// one and return the right data and text below:

						circles
							.transition()
							.duration(2000)
							.attr("cx", function(d) {
								if (whichbutton === "toys") {
									return xScale(+d.poorToys);
								}
								else { // then it's books:
									return xScale(+d.poorBooks);
								}
								// return the value to use for your x scale here
							})
							.attr("cy", function(d) {
								if (whichbutton === "toys") {
									return yScale(+d.richToys);
								} else {
									return yScale(+d.richBooks);
								}
							});

							// We can't transition the new title text -- must remove and rewrite.
						circles.selectAll("title").remove();
						circles
							.append("title")
							.text(function(d) {
								if (whichbutton === "toys") {
									return d.country + " reports toys for " + d.poorToys + "% kids in poor areas and " + d.richToys + "% in rich areas.";
								} else {
									return d.country + " reports books for " + d.poorBooks + "% kids in poor areas and " + d.richBooks + "% in rich areas.";
								}
							});

							// change the visible title!
					if (whichbutton === "toys") {
						d3.select("p.chart-title").text("Toys at Home");
					} else {
						d3.select("p.chart-title").text("Books at Home");
					}


				}); // end clicker function


			};


		</script>

	</body>
</html>