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Connecting Two Points with a Line in D3.js
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <link rel="stylesheet" type="text/css" href="style.css"> | |
| </head> | |
| <body> | |
| <div id="graph"> | |
| <h1>Connecting Two Points with a Line in D3.js</h1> | |
| </div> | |
| <!-- Scripts --> | |
| <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| <script src="script.js"></script> | |
| </body> | |
| </html> |
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| /* | |
| * This is the data for 3 lines. Each line connects | |
| * 2 points | |
| */ | |
| var lines = [ | |
| [{ "x":20, "y":20}, {"x":70, "y":40}], | |
| [{ "x": 40, "y": 40}, { "x": 60, "y": 70}], | |
| [{ "x": 80, "y": 20}, { "x": 80, "y": 60}] | |
| ] | |
| var margin = {top: 20, right: 80, bottom: 30, left: 50}, | |
| width = 600 - margin.left - margin.right, | |
| height = 400 - margin.top - margin.bottom; | |
| var x = d3.scale.linear() | |
| .range([0,width]) | |
| .domain([0,100]); | |
| var y = d3.scale.linear() | |
| .range([height,0]) | |
| .domain([0,100]); | |
| var xAxis = d3.svg.axis() | |
| .scale(x) | |
| .orient("bottom"); | |
| var yAxis = d3.svg.axis() | |
| .scale(y) | |
| .orient("left"); | |
| var line = d3.svg.line() | |
| .x(function (d) { return x(d.x); }) | |
| .y(function (d) { return y(d.y); }); | |
| var svg = d3.select("#graph").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 + ")");; | |
| svg.append("g") | |
| .attr("class", "xAxis") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(xAxis); | |
| svg.append("g") | |
| .attr("class", "yAxis") | |
| .call(yAxis); | |
| /* | |
| * Here is where the points are plotted. | |
| * We pass the function two sets of coordinates | |
| * at a time. | |
| * | |
| * This loop will run three times (once for each line) | |
| */ | |
| for (var i=0; i < lines.length; i++) { | |
| svg.append("path") | |
| .attr("class", "plot") | |
| .datum(lines[i]) | |
| .attr("d", line); | |
| } |
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| body { | |
| font-family: sans-serif; | |
| color: #474747; | |
| } | |
| h1 { | |
| text-align: center; | |
| font-size: 20px; | |
| } | |
| #graph { | |
| width: 700px; | |
| margin: 0 auto; | |
| } | |
| svg { | |
| stroke-width: 3px; | |
| } | |
| .xAxis path, .yAxis path{ | |
| stroke: #474747; | |
| fill: none; | |
| } | |
| path.plot { | |
| stroke: #FFA319; | |
| } |
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