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213 lines
5.4 KiB
213 lines
5.4 KiB
/* ------------------------------------------------------------------------------ |
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* |
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* # D3.js - area chart with missing data |
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* |
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* Demo d3.js area chart setup with tooltip and missing data |
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* |
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* Version: 1.0 |
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* Latest update: August 1, 2015 |
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* |
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* ---------------------------------------------------------------------------- */ |
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$(function () { |
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// Initialize chart |
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areaMissing('#d3-missing-data', 400); |
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// Chart setup |
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function areaMissing(element, height) { |
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// Basic setup |
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// ------------------------------ |
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// Define main variables |
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var d3Container = d3.select(element), |
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margin = {top: 5, right: 20, bottom: 20, left: 40}, |
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width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right, |
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height = height - margin.top - margin.bottom - 5; |
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// Data set |
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var data = d3.range(60).map(function(i) { |
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return {x: i / 59, y: i % 5 ? (Math.sin(i / 3) + 2) / 4 : null}; |
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}); |
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// Construct scales |
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// ------------------------------ |
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// Horizontal |
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var x = d3.scale.linear() |
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.range([0, width]); |
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// Vertical |
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var y = d3.scale.linear() |
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.range([height, 0]); |
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// Create axes |
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// ------------------------------ |
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// Horizontal |
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var xAxis = d3.svg.axis() |
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.scale(x) |
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.orient("bottom"); |
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// Vertical |
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var yAxis = d3.svg.axis() |
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.scale(y) |
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.orient("left"); |
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// Add tooltip |
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var tip = d3.tip() |
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.attr('class', 'd3-tip') |
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.offset([-10, 0]) |
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.html(function(d) { |
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return d.x; |
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}); |
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// Create chart |
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// ------------------------------ |
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// Add SVG element |
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var container = d3Container.append("svg"); |
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// Add SVG group |
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var svg = container |
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.datum(data) |
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.attr("width", width + margin.left + margin.right) |
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.attr("height", height + margin.top + margin.bottom) |
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.append("g") |
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.attr("transform", "translate(" + margin.left + "," + margin.top + ")") |
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.call(tip); |
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// Construct chart layout |
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// ------------------------------ |
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// Line |
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var line = d3.svg.line() |
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.defined(function(d) { return d.y != null; }) |
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.x(function(d) { return x(d.x); }) |
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.y(function(d) { return y(d.y); }); |
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// Area |
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var area = d3.svg.area() |
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.defined(line.defined()) |
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.x(line.x()) |
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.y1(line.y()) |
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.y0(y(0)); |
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// |
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// Append chart elements |
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// |
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// Append axes |
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// ------------------------------ |
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// Horizontal |
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svg.append("g") |
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.attr("class", "d3-axis d3-axis-horizontal d3-axis-strong") |
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.attr("transform", "translate(0," + height + ")") |
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.call(xAxis); |
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// Vertical |
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svg.append("g") |
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.attr("class", "d3-axis d3-axis-vertical d3-axis-strong") |
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.call(yAxis); |
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// Chart elements |
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// ------------------------------ |
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// Add area |
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svg.append("path") |
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.attr("class", "d3-area") |
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.attr("d", area) |
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.style("fill", "#81C784"); |
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// Add line |
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svg.append("path") |
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.attr("class", "d3-line d3-line-medium") |
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.attr("d", line) |
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.style("stroke", "#43A047"); |
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// Add dots |
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svg.selectAll(".d3-dot") |
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.data(data.filter(function(d) { return d.y; })) |
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.enter() |
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.append("circle") |
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.attr("class", "d3-dot") |
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.attr("cx", line.x()) |
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.attr("cy", line.y()) |
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.attr("r", 3) |
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.style("fill", "#fff") |
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.style("stroke", "#43A047") |
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.style("stroke-width", 1.5) |
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.on('mouseover', tip.show) |
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.on('mouseout', tip.hide); |
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// Resize chart |
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// ------------------------------ |
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// Call function on window resize |
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$(window).on('resize', resize); |
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// Call function on sidebar width change |
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$('.sidebar-control').on('click', resize); |
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// Resize function |
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// |
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// Since D3 doesn't support SVG resize by default, |
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// we need to manually specify parts of the graph that need to |
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// be updated on window resize |
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function resize() { |
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// Layout variables |
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width = d3Container.node().getBoundingClientRect().width - margin.left - margin.right; |
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// Layout |
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// ------------------------- |
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// Main svg width |
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container.attr("width", width + margin.left + margin.right); |
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// Width of appended group |
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svg.attr("width", width + margin.left + margin.right); |
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// Axes |
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// ------------------------- |
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// Horizontal range |
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x.range([0, width]); |
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// Horizontal axis |
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svg.selectAll('.d3-axis-horizontal').call(xAxis); |
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// Chart elements |
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// ------------------------- |
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// Line path |
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svg.selectAll('.d3-line').attr("d", line); |
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// Area path |
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svg.selectAll('.d3-area').attr("d", area); |
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// Dots |
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svg.selectAll('.d3-dot').attr("cx", line.x()); |
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} |
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} |
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});
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