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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <svg></svg> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| // | |
| // `data` is a randomly generated data set. | |
| // my assumption is that you will structure your data with | |
| // some kind of confidence, error, standard deviation, or | |
| // whatever to display whatever uncertainty you'd like to show. | |
| // | |
| // generate random data with d3 range and map | |
| var data = d3.range(40).map(function(i) { | |
| return { | |
| x: i + 1, | |
| // generate a random value between 40 and 60 | |
| y: d3.randomUniform(40, 60)(), | |
| // generate a random interval between 1 and 5 | |
| e: d3.randomUniform(1, 5)() | |
| }; | |
| }); | |
| var width = document.documentElement.clientWidth, | |
| height = document.documentElement.clientHeight; | |
| var svg = d3.select('svg').attr('width', width).attr('height', height); | |
| var margin = {top: 20, right: 20, bottom: 30, left: 50}, | |
| chartWidth = width - margin.left - margin.right, | |
| chartHeight = height - margin.top - margin.bottom, | |
| g = svg.append('g').attr('transform', 'translate(' + margin.left + ',' + margin.top + ')'); | |
| var x = d3.scaleLinear() | |
| .range([0, chartWidth]) | |
| .domain([0, 40]); | |
| var y = d3.scaleLinear() | |
| .range([chartHeight, 0]) | |
| .domain([0, 100]); | |
| var addData = function() { | |
| var points = g.selectAll('circle.point') | |
| .data(data); | |
| points.enter() | |
| .append('circle') | |
| .attr('class', 'point') | |
| .attr('r', 2) | |
| .merge( points ) | |
| .attr('cx', function(d) { return x(d.x); }) | |
| .attr('cy', function(d) { return y(d.y); }) | |
| var lines = g.selectAll('line.error') | |
| .data(data); | |
| lines.enter() | |
| .append('line') | |
| .attr('class', 'error') | |
| .merge(lines) | |
| .attr('x1', function(d) { return x(d.x); }) | |
| .attr('x2', function(d) { return x(d.x); }) | |
| .attr('y1', function(d) { return y(d.y + d.e); }) | |
| .attr('y2', function(d) { return y(d.y - d.e); }); | |
| }; | |
| // axes | |
| var xAxis = g.append('g') | |
| .attr('transform', 'translate(0,' + chartHeight + ')') | |
| .call( d3.axisBottom(x) ); | |
| var yAxis = g.append('g') | |
| .call( d3.axisLeft(y) ); | |
| addData(); | |
| // resize | |
| window.onresize = function() { | |
| width = document.documentElement.clientWidth; | |
| height = document.documentElement.clientHeight; | |
| svg.attr('width', width).attr('height', height) | |
| chartWidth = width - margin.left - margin.right; | |
| chartHeight = height - margin.top - margin.bottom; | |
| x.range([0, chartWidth]); | |
| y.range([chartHeight, 0]); | |
| xAxis | |
| .attr('transform', 'translate(0,' + chartHeight + ')') | |
| .call( d3.axisBottom(x) ); | |
| yAxis.call( d3.axisLeft(y) ); | |
| addData(); | |
| }; | |
| </script> | |
| <style> | |
| g.datapoint { | |
| opacity: 0.5; | |
| circle { | |
| fill: red; | |
| } | |
| } | |
| line { | |
| stroke: black; | |
| stroke-width: 1px; | |
| fill: none; | |
| } | |
| </style> |
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