This scatterplot is constructed from a TSV file storing the dimensions of sepals and petals of various iris flowers. The chart employs conventional margins and a number of D3 features:
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| font: 10px sans-serif; | |
| } | |
| .axis path, | |
| .axis line { | |
| fill: none; | |
| stroke: #000; | |
| shape-rendering: crispEdges; | |
| } | |
| .dot { | |
| stroke: #000; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var margin = {top: 20, right: 20, bottom: 30, left: 40}, | |
| width = 960 - margin.left - margin.right, | |
| height = 500 - margin.top - margin.bottom; | |
| var x = d3.scale.linear() | |
| .range([0, width]); | |
| var y = d3.scale.linear() | |
| .range([height, 0]); | |
| var color = d3.scale.category10(); | |
| var xAxis = d3.svg.axis() | |
| .scale(x) | |
| .orient("bottom"); | |
| var yAxis = d3.svg.axis() | |
| .scale(y) | |
| .orient("left"); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| .append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| d3.tsv("http://sparql.org/sparql?query=SELECT+%3Fname+%3Fyear_created+%3Fseating_capacity%0D%0AFROM+%3Chttp%3A%2F%2Frdf.greggkellogg.net%2Fdistiller%3Fformat%3Drdfxml%26in_fmt%3Djsonld%26uri%3Dhttp%3A%2F%2Fsfsheath.github.io%2Froman-amphitheaters%2Froman-amphitheaters.geojson%3E%0D%0AWHERE+%7B%0D%0A%3Fname+%3Fx+%3Fy+.%0D%0A%3Fy+%3Chttp%3A%2F%2Fdbpedia.org%2Fproperty%2FseatingCapacity%3E+%3Fseating_capacity+.%0D%0A%3Fy+%3Chttp%3A%2F%2Fpurl.org%2Fdc%2Fterms%2Fcreated%3E+%3Fyear_created+.+%7D&default-graph-uri=&output=csv&stylesheet=%2Fxml-to-html.xsl", function(error, data) { | |
| data.forEach(function(d) { | |
| d.year_created = +d.year_created; | |
| d.seating_capacity = +d.seating_capacity; | |
| }); | |
| x.domain(d3.extent(data, function(d) { return d.seating_capacity; })).nice(); | |
| y.domain(d3.extent(data, function(d) { return d.year_created; })).nice(); | |
| svg.append("g") | |
| .attr("class", "x axis") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(xAxis) | |
| .append("text") | |
| .attr("class", "label") | |
| .attr("x", width) | |
| .attr("y", -6) | |
| .style("text-anchor", "end") | |
| .text("Sepal Width (cm)"); | |
| svg.append("g") | |
| .attr("class", "y axis") | |
| .call(yAxis) | |
| .append("text") | |
| .attr("class", "label") | |
| .attr("transform", "rotate(-90)") | |
| .attr("y", 6) | |
| .attr("dy", ".71em") | |
| .style("text-anchor", "end") | |
| .text("Sepal Length (cm)") | |
| svg.selectAll(".dot") | |
| .data(data) | |
| .enter().append("circle") | |
| .attr("class", "dot") | |
| .attr("r", 3.5) | |
| .attr("cx", function(d) { return x(d.seating_capacity); }) | |
| .attr("cy", function(d) { return y(d.year_created); }) | |
| .style("fill", function(d) { return color(d.name); }); | |
| var legend = svg.selectAll(".legend") | |
| .data(color.domain()) | |
| .enter().append("g") | |
| .attr("class", "legend") | |
| .attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; }); | |
| legend.append("rect") | |
| .attr("x", width - 18) | |
| .attr("width", 18) | |
| .attr("height", 18) | |
| .style("fill", color); | |
| legend.append("text") | |
| .attr("x", width - 24) | |
| .attr("y", 9) | |
| .attr("dy", ".35em") | |
| .style("text-anchor", "end") | |
| .text(function(d) { return d; }); | |
| }); | |
| </script> |
