A demonstration of line.defined.
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Line with Missing Data
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| license: gpl-3.0 |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .area { | |
| fill: lightsteelblue; | |
| } | |
| .line { | |
| fill: none; | |
| stroke: steelblue; | |
| stroke-width: 1.5px; | |
| } | |
| .dot { | |
| fill: white; | |
| stroke: steelblue; | |
| stroke-width: 1.5px; | |
| } | |
| </style> | |
| <body> | |
| <script src="//d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| var data = d3.range(40).map(function(i) { | |
| return i % 5 ? {x: i / 39, y: (Math.sin(i / 3) + 2) / 4} : null; | |
| }); | |
| var margin = {top: 40, right: 40, bottom: 40, left: 40}, | |
| width = 960 - margin.left - margin.right, | |
| height = 500 - margin.top - margin.bottom; | |
| var x = d3.scaleLinear() | |
| .range([0, width]); | |
| var y = d3.scaleLinear() | |
| .range([height, 0]); | |
| var line = d3.line() | |
| .defined(function(d) { return d; }) | |
| .x(function(d) { return x(d.x); }) | |
| .y(function(d) { return y(d.y); }); | |
| var svg = d3.select("body").append("svg") | |
| .datum(data) | |
| .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", "axis axis--x") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(d3.axisBottom(x)); | |
| svg.append("g") | |
| .attr("class", "axis axis--y") | |
| .call(d3.axisLeft(y)); | |
| svg.append("path") | |
| .attr("class", "line") | |
| .attr("d", line); | |
| svg.selectAll(".dot") | |
| .data(data.filter(function(d) { return d; })) | |
| .enter().append("circle") | |
| .attr("class", "dot") | |
| .attr("cx", line.x()) | |
| .attr("cy", line.y()) | |
| .attr("r", 3.5); | |
| </script> |
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