Small multiples: a glance at these 31 graphs shows the variability in temperature... variability. Creating svgs, axes, and assigning axis domains and path definitions in functions allows for efficiency in creating multiples.
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August 29, 2015 14:21
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Small Multiples: Temperature
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| [{"date":"2015-04-20","min":"26.8","max":"48.0"},{"date":"2015-04-21","min":"36.1","max":"57.2"},{"date":"2015-04-22","min":"29.3","max":"61.5"},{"date":"2015-04-23","min":"46.4","max":"48.6"},{"date":"2015-04-24","min":"28.2","max":"48.9"},{"date":"2015-04-25","min":"33.8","max":"52.5"},{"date":"2015-04-26","min":"29.3","max":"55.6"},{"date":"2015-04-27","min":"40.6","max":"57.0"},{"date":"2015-04-28","min":"41.5","max":"58.8"},{"date":"2015-04-29","min":"47.8","max":"59.4"},{"date":"2015-04-30","min":"44.8","max":"57.7"},{"date":"2015-05-01","min":"40.1","max":"63.7"},{"date":"2015-05-02","min":"30.9","max":"70.5"},{"date":"2015-05-03","min":"32.7","max":"73.6"},{"date":"2015-05-04","min":"34.5","max":"84.4"},{"date":"2015-05-05","min":"51.3","max":"74.3"},{"date":"2015-05-06","min":"34.2","max":"77.4"},{"date":"2015-05-07","min":"39.7","max":"84.2"},{"date":"2015-05-08","min":"44.8","max":"64.2"},{"date":"2015-05-09","min":"44.6","max":"70.0"},{"date":"2015-05-10","min":"46.2","max":"84.9"},{"date":"2015-05-11","min":"49.1","max":"66.6"},{"date":"2015-05-12","min":"47.8","max":"76.6"},{"date":"2015-05-13","min":"40.1","max":"62.1"},{"date":"2015-05-14","min":"30.2","max":"71.6"},{"date":"2015-05-15","min":"31.6","max":"74.3"},{"date":"2015-05-16","min":"41.7","max":"71.4"},{"date":"2015-05-17","min":"53.8","max":"77.5"},{"date":"2015-05-18","min":"50.2","max":"69.1"},{"date":"2015-05-19","min":"50.0","max":"71.6"},{"date":"2015-05-20","min":"41.5","max":"59.5"}] |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"></meta> | |
| <meta content="width=device-width, initial-scale=1.0" name="viewport"></meta> | |
| <title>Maine Weather Trends</title> | |
| <link href='http://fonts.googleapis.com/css?family=Open+Sans:400,300' rel='stylesheet' type='text/css'> | |
| <link href="weather.css" rel="stylesheet" type="text/css"/> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script> | |
| </head> | |
| <body> | |
| <h1>Temperature Range</h1> | |
| <h2>for 31 days in Stark, ME</h2> | |
| <div id="temp"></div> | |
| </body> | |
| <script src="weather.js"></script> | |
| </html> |
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| * { | |
| margin: 0; | |
| padding: 0; | |
| border: 0; | |
| } | |
| body { | |
| padding-top: 10px; | |
| font-family: open sans, sans-serif; | |
| } | |
| h1, h2 { | |
| font-weight: 300; | |
| text-align: center; | |
| } | |
| h1 { | |
| font-size: 30px; | |
| text-transform: uppercase; | |
| } | |
| h2 { | |
| font-size: 18px; | |
| margin-bottom: 10px; | |
| } | |
| #temp { | |
| position: relative; | |
| width: 600px; | |
| height: 500px; | |
| margin: 0 auto; | |
| } | |
| svg { margin: -2px 0; } | |
| .day { | |
| display: inline-block; | |
| width: 100px; | |
| height: 100px; | |
| background: white; | |
| } | |
| text { font-size: 11px;} | |
| text.title { font-size: 13px;} | |
| path, line { | |
| fill: none; | |
| stroke-width: .5px; | |
| stroke: black; | |
| } | |
| path.line { | |
| stroke-width: 4px; | |
| } |
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| var weather = [] | |
| var s = { | |
| width: 150, | |
| height: 100, | |
| m: { | |
| top: 20, | |
| right: 20, | |
| bottom: 10, | |
| left: 25 | |
| } | |
| } | |
| s.plot = { w: s.width - s.m.left - s.m.right, h: s.height - s.m.top - s.m.bottom } | |
| var line = { | |
| x: d3.scale.ordinal().range([0, s.plot.w]), | |
| y: d3.scale.linear().range([s.plot.h, 0]) | |
| } | |
| line.xAxis = d3.svg.axis().scale(line.x).orient('bottom').tickSize(2, 0).ticks(2) | |
| line.yAxis = d3.svg.axis().scale(line.y).orient('left').tickSize(2, 0).ticks(5) | |
| var tempLine = d3.svg.line() | |
| .x(function(d) { return line.x(d.type) }) | |
| .y(function(d) { return line.y(d.temp) }) | |
| d3.json('20150420-20150520_tempRange.json', function(err, data) { | |
| if (err) console.error(err) | |
| data.forEach(function(d, i) { | |
| weather[i] = [ | |
| { date: d.date, | |
| type: "min", | |
| temp: +d.min | |
| }, | |
| { date: d.date, | |
| type: "max", | |
| temp: +d.max | |
| } | |
| ] | |
| }) | |
| weather.forEach(function(day, i) { | |
| //add div to display day in | |
| d3.select('#temp').append('div') | |
| .attr('class', 'd'+day[0].date + ' day') | |
| //make grph for day | |
| makeTempGraph(day, '.d'+day[0].date, day[0].date) | |
| }) | |
| }) | |
| function createSVG(hook, newClass) { | |
| var svg = d3.select(hook).append('svg') | |
| .attr('viewBox', '0 0 '+s.width+' '+s.height) | |
| .attr('width', '100%') | |
| .attr('height', '100%') | |
| svg.append('g') | |
| .attr('class', newClass || '') | |
| .attr('width', s.plot.w) | |
| .attr('height', s.plot.h) | |
| .attr('transform', 'translate('+s.m.left+','+s.m.top+')') | |
| return svg | |
| } | |
| function createAxes(svg) { | |
| // y-axis | |
| var thisAxisY = svg.append('g') | |
| .attr('class', 'y axis') | |
| .call(line.yAxis) | |
| thisAxisY.selectAll('text') | |
| .attr('dx', 2) | |
| // x-axis | |
| var thisAxisX = svg.append('g') | |
| .attr('class', 'x axis') | |
| .attr('transform', 'translate(0,'+s.plot.h+')') | |
| .call(line.xAxis) | |
| } | |
| //build temperature line graph | |
| function makeTempGraph(weather, hook, title) { | |
| line.x.domain(['min', 'max']) | |
| line.y.domain([20, 100]) | |
| var tempSVG = createSVG(hook, 'temp') | |
| var tempG = tempSVG.select('.temp') | |
| createAxes(tempG) | |
| //make line | |
| tempG.append('path') | |
| .datum(weather) | |
| .attr('class', 'line') | |
| .attr('d', tempLine) | |
| .style('stroke', function() { | |
| return '#'+ | |
| ('0'+( Math.floor((weather[1].temp - weather[0].temp)*4.6) ).toString(16)).slice(-2)+ | |
| ('0'+( Math.floor((weather[1].temp - weather[0].temp)*3.6) ).toString(16)).slice(-2)+ | |
| ('0'+( Math.floor((weather[1].temp - weather[0].temp)*0) ).toString(16)).slice(-2) | |
| }) | |
| tempSVG.append('text') | |
| .attr('class', 'title') | |
| .attr('transform', 'translate('+s.width/2+', 0)') | |
| .attr('text-anchor', 'middle') | |
| .text(title) | |
| } | |
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