| Thomas Vachuska | 95aadff | 2015-03-26 11:45:41 -0700 | [diff] [blame] | 1 | <!DOCTYPE html> |
| 2 | <meta charset="utf-8"> |
| 3 | <style> |
| 4 | |
| 5 | svg { |
| 6 | font: 10px sans-serif; |
| 7 | } |
| 8 | |
| 9 | .line { |
| 10 | fill: none; |
| 11 | stroke: darkgreen; |
| 12 | stroke-width: 2px; |
| 13 | } |
| 14 | |
| 15 | .axis path, |
| 16 | .axis line { |
| 17 | fill: none; |
| 18 | stroke: #999; |
| 19 | stroke-width: 2px; |
| 20 | shape-rendering: crispEdges; |
| 21 | } |
| 22 | |
| 23 | </style> |
| 24 | <body> |
| 25 | <script src="http://d3js.org/d3.v3.min.js"></script> |
| 26 | <script> |
| 27 | (function () { |
| 28 | var cs = 0, |
| 29 | samples = [ |
| 30 | 89.53, |
| 31 | 37515.81, |
| 32 | 104609.6, |
| 33 | 113105.11, |
| 34 | 103194.74, |
| 35 | 122151.63, |
| 36 | 128623.9, |
| 37 | 137325.33, |
| 38 | 154897.31, |
| 39 | 161235.07, |
| 40 | 162025.4, |
| 41 | 164902.64, |
| 42 | 158196.26, |
| 43 | 161072.44, |
| 44 | 160792.54, |
| 45 | 164692.44, |
| 46 | 161979.74, |
| 47 | 162137.4, |
| 48 | 159325.19, |
| 49 | 170465.44, |
| 50 | 168186.46, |
| 51 | 171152.34, |
| 52 | 168221.02, |
| 53 | 167440.73, |
| 54 | 165003.39, |
| 55 | 166855.18, |
| 56 | 157268.79, |
| 57 | 164087.54, |
| 58 | 162265.21, |
| 59 | 165990.16, |
| 60 | 176364.01, |
| 61 | 172064.07, |
| 62 | 184872.24, |
| 63 | 183249.8, |
| 64 | 182282.47, |
| 65 | 171475.11, |
| 66 | 158880.58, |
| 67 | 166016.69, |
| 68 | 168233.16, |
| 69 | 177759.92, |
| 70 | 179742.87, |
| 71 | 170819.44, |
| 72 | 167577.73, |
| 73 | 169479.9, |
| 74 | 175544.89, |
| 75 | 183792.01, |
| 76 | 184689.52, |
| 77 | 178503.87, |
| 78 | 173219.27, |
| 79 | 179085.49, |
| 80 | 179700.54, |
| 81 | 174281.17, |
| 82 | 181353.08, |
| 83 | 180173.14, |
| 84 | 184093.16, |
| 85 | 186011.5, |
| 86 | 176952.79, |
| 87 | 175319.2, |
| 88 | 169001.05, |
| 89 | 174545.12, |
| 90 | 169156.29, |
| 91 | 171804.3, |
| 92 | 159155.54, |
| 93 | 154709.96, |
| 94 | 157263.97 |
| 95 | ], |
| 96 | theSample, |
| 97 | headers = [ "Whole", "Half", "Third" ]; |
| 98 | |
| 99 | var n = 243, |
| 100 | duration = 750, |
| 101 | now = new Date(Date.now() - duration), |
| 102 | data = []; |
| 103 | |
| 104 | headers.forEach(function (d, li) { |
| 105 | data[li] = d3.range(n).map(function () { return 0; }); |
| 106 | }); |
| 107 | |
| 108 | var margin = {top: 20, right: 100, bottom: 20, left: 100}, |
| 109 | width = 960 - margin.right, |
| 110 | height = 512 - margin.top - margin.bottom; |
| 111 | |
| 112 | var x = d3.time.scale() |
| 113 | .domain([now - (n - 2) * duration, now - duration]) |
| 114 | .range([0, width]); |
| 115 | |
| 116 | var y = d3.scale.linear() |
| 117 | .domain([0, 200000]) |
| 118 | .range([height, 0]); |
| 119 | |
| 120 | var svg = d3.select("body").append("p").append("svg") |
| 121 | .attr("width", width + margin.left + margin.right) |
| 122 | .attr("height", height + margin.top + margin.bottom) |
| 123 | .append("g") |
| 124 | .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); |
| 125 | |
| 126 | svg.append("defs").append("clipPath") |
| 127 | .attr("id", "clip") |
| 128 | .append("rect") |
| 129 | .attr("width", width) |
| 130 | .attr("height", height); |
| 131 | |
| 132 | var axis = svg.append("g") |
| 133 | .attr("class", "x axis") |
| 134 | .attr("transform", "translate(0," + height + ")") |
| 135 | .call(x.axis = d3.svg.axis().scale(x).orient("bottom")); |
| 136 | |
| 137 | svg.append("g") |
| 138 | .attr("class", "y axis") |
| 139 | .call(d3.svg.axis().scale(y).orient("left")); |
| 140 | |
| 141 | svg.append("g") |
| 142 | .attr("class", "y axis") |
| 143 | .attr("transform", "translate(" + width + " ,0)") |
| 144 | .call(d3.svg.axis().scale(y).orient("right")); |
| 145 | |
| 146 | var lines = [], paths = []; |
| 147 | data.forEach(function (p, li) { |
| 148 | lines[li]= d3.svg.line() |
| 149 | .interpolate("basis") |
| 150 | .x(function (d, i) { |
| 151 | return x(now - (n - 1 - i) * duration); |
| 152 | }) |
| 153 | .y(function (d, i) { |
| 154 | return y(d); |
| 155 | }); |
| 156 | |
| 157 | paths[li] = svg.append("g") |
| 158 | .attr("clip-path", "url(#clip)") |
| 159 | .append("path") |
| 160 | .datum(function () { return data[li]; }) |
| 161 | .attr("id", "line" + li) |
| 162 | .attr("class", "line"); |
| 163 | }); |
| 164 | |
| 165 | var transition = d3.select({}).transition() |
| 166 | .duration(750) |
| 167 | .ease("linear"); |
| 168 | |
| 169 | function tick() { |
| 170 | transition = transition.each(function () { |
| 171 | // update the domains |
| 172 | now = new Date(); |
| 173 | x.domain([now - (n - 2) * duration, now - duration]); |
| 174 | |
| 175 | data.forEach(function (d, li) { |
| 176 | // push the new most recent sample onto the back |
| 177 | d.push(theSample[li]); |
| 178 | |
| 179 | // redraw the line and slide it left |
| 180 | paths[li].attr("d", lines[li]).attr("transform", null); |
| 181 | paths[li].transition().attr("transform", "translate(" + x(now - (n - 1) * duration) + ")"); |
| 182 | |
| 183 | // pop the old data point off the front |
| 184 | d.shift(); |
| 185 | }); |
| 186 | |
| 187 | // slide the x-axis left |
| 188 | axis.call(x.axis); |
| 189 | |
| 190 | }).transition().each("start", tick); |
| 191 | } |
| 192 | |
| 193 | function setSample() { |
| 194 | var v = samples[cs++]; |
| 195 | theSample = [ v, v/2, v/3 ]; |
| 196 | } |
| 197 | |
| 198 | setSample(); |
| 199 | setInterval(setSample, 1000); |
| 200 | tick(); |
| 201 | |
| 202 | })() |
| 203 | </script> |
| 204 | </body> |
| 205 | </html> |