Created
September 19, 2015 20:09
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Plot of the iris dataset using d3.js
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| <!DOCTYPE html> | |
| <html> | |
| <meta charset="utf-8"> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <style type="text/css" media="screen"> | |
| circle { | |
| stroke: white; | |
| } | |
| text { | |
| font-size: 0.9em; | |
| font-family: 'Helvetica'; | |
| } | |
| .label { | |
| font-size: 1em; | |
| } | |
| .title { | |
| font-size: 2em; | |
| } | |
| line, path { | |
| stroke: #000; | |
| fill: none; | |
| shape-rendering: crispEdges; | |
| } | |
| </style> | |
| <body> | |
| <script type="text/javascript" charset="utf-8"> | |
| var outerWidth = 800, | |
| outerHeight = 600; | |
| var margin = {"left": 70, "right": 70, "top": 100, "bottom": 90}; | |
| var innerWidth = outerWidth - margin.left - margin.right; | |
| var innerHeight = outerHeight - margin.top - margin.bottom; | |
| var xColumn = "sepal_length", | |
| yColumn = "petal_width", | |
| rColumn = "sepal_length", | |
| colorColumn = "species"; | |
| var minRadius = 5, | |
| maxRadius = 15; | |
| var xScale = d3.scale.linear().range([0, innerWidth]); | |
| var yScale = d3.scale.linear().range([innerHeight, 0]); | |
| var rScale = d3.scale.linear().range([minRadius, maxRadius]); | |
| var colorScale = d3.scale.category10(); | |
| var colorScale = d3.scale.ordinal() | |
| .range(["indianred", "steelblue", "seagreen"]) | |
| .domain(["setosa", "versicolor", "virginica"]); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", outerWidth) | |
| .attr("height", outerHeight); | |
| var g = svg.append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| // Axes group | |
| var xAxisG = g.append("g") | |
| .attr("transform", "translate(0," + innerHeight + ")"); | |
| var title = g.append("text") | |
| .style("text-anchor", "middle") | |
| .attr("transform", "translate(" + (innerWidth / 2) + "," + (-0.5*margin.top) + ")") | |
| .attr("class", "title") | |
| .text("Iris dataset"); | |
| var xAxisLabel = xAxisG.append("text") | |
| .style("text-anchor", "middle") | |
| .attr("transform", "translate(" + (innerWidth / 2) + "," + (0.5*margin.bottom) + ")") | |
| .attr("class", "label") | |
| .text(xColumn + " (cm)"); | |
| var yAxisG = g.append("g"); | |
| var yAxisLabel = yAxisG.append("text") | |
| .style("text-anchor", "end") | |
| .attr("transform", "rotate(-90)") | |
| .attr("dy", "-3em") | |
| .attr("dx", "-8em") | |
| .attr("class", "label") | |
| .text(yColumn + " (cm)"); | |
| // Axes | |
| var xAxis = d3.svg.axis().scale(xScale).orient("bottom"); | |
| var yAxis = d3.svg.axis().scale(yScale).orient("left"); | |
| function scatterPlot(data) { | |
| xScale.domain(d3.extent(data, function(d) { return d[xColumn]; })); | |
| yScale.domain([0, d3.max(data, function(d) { return d[yColumn]; })]); | |
| rScale.domain(d3.extent(data, function(d) { return d[rColumn]; })); | |
| xAxisG.call(xAxis); | |
| console.log("HELLO"); | |
| yAxisG.call(yAxis); | |
| // Bind | |
| var circles = g.selectAll("circle").data(data); | |
| // Enter | |
| circles.enter().append("circle"); | |
| // Update | |
| circles | |
| .attr("r", function(d) { return rScale(d[rColumn]); }) | |
| .attr("cx", function(d) { return xScale(d[xColumn]); }) | |
| .attr("cy", function(d) { return yScale(d[yColumn]); }) | |
| .attr("fill", function(d) { return colorScale(d[colorColumn]); }); | |
| // Exit | |
| circles.exit().remove(); | |
| } | |
| function type(d) { | |
| d.sepal_width = +d.sepal_width; | |
| d.sepal_length = +d.sepal_length; | |
| d.petal_width = +d.petal_width; | |
| d.petal_length = +d.petal_length; | |
| return d; | |
| } | |
| d3.csv("iris.csv", type, scatterPlot); | |
| </script> | |
| </body> | |
| </html> |
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I'm learning d3.js and I wrote this simple piece of code watching this tutorial by Curran Kelleher:
https://www.youtube.com/watch?v=8jvoTV54nXw