| author | Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr> |
| Fri, 18 Apr 2014 14:31:58 +0200 | |
| changeset 51 | 79833eaa394a |
| parent 47 | c0b4a8b5a012 |
| permissions | -rw-r--r-- |
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47
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<!DOCTYPE html> |
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<html> |
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<head> |
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<script type="text/javascript" src="../../d3.js"></script> |
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<script type="text/javascript" src="../../d3.csv.js"></script> |
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<script type="text/javascript" src="../../d3.time.js"></script> |
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7 |
<style type="text/css"> |
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body { |
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font: 10px sans-serif; |
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margin: 0; |
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} |
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path.line { |
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fill: none; |
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stroke: #666; |
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stroke-width: 1.5px; |
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} |
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path.area { |
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fill: #e7e7e7; |
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} |
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.axis { |
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shape-rendering: crispEdges; |
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} |
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.x.axis line { |
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stroke: #fff; |
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} |
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.x.axis .minor { |
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stroke-opacity: .5; |
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} |
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.x.axis path { |
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display: none; |
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} |
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.y.axis line, .y.axis path { |
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fill: none; |
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stroke: #000; |
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} |
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</style> |
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46 |
</head> |
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47 |
<body> |
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<script type="text/javascript"> |
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49 |
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var m = [20, 40, 20, 20], |
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w = 960 - m[1] - m[3], |
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h = 140 - m[0] - m[2], |
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parse = d3.time.format("%b %Y").parse; |
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// Scales. Note the inverted domain for the y-scale: bigger is up! |
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var x = d3.time.scale().range([0, w]), |
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y = d3.scale.linear().range([h, 0]); |
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58 |
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// Axes. |
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var xAxis = d3.svg.axis().scale(x).tickSize(-h).tickSubdivide(true), |
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yAxis = d3.svg.axis().scale(y).ticks(4).orient("right"); |
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62 |
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// An area generator, for the light fill. |
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var area = d3.svg.area() |
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.interpolate("monotone") |
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.x(function(d) { return x(d.date); }) |
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.y0(h) |
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.y1(function(d) { return y(d.price); }); |
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69 |
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// A line generator, for the dark stroke. |
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var line = d3.svg.line() |
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.interpolate("monotone") |
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.x(function(d) { return x(d.date); }) |
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.y(function(d) { return y(d.price); }); |
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75 |
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d3.csv("../data/stocks.csv", function(data) { |
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77 |
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// Filter to one symbol; the S&P 500. |
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var values = data.filter(function(d) { |
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return d.symbol == "S&P 500"; |
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}); |
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82 |
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// Parse dates and numbers. We assume values are sorted by date. |
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values.forEach(function(d) { |
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d.date = parse(d.date); |
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d.price = +d.price; |
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}); |
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88 |
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// Compute the minimum and maximum date, and the maximum price. |
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x.domain([values[0].date, values[values.length - 1].date]); |
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y.domain([0, d3.max(values, function(d) { return d.price; })]); |
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92 |
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// Add an SVG element with the desired dimensions and margin. |
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94 |
var svg = d3.select("body").append("svg:svg") |
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95 |
.attr("width", w + m[1] + m[3]) |
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96 |
.attr("height", h + m[0] + m[2]) |
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97 |
.append("svg:g") |
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98 |
.attr("transform", "translate(" + m[3] + "," + m[0] + ")"); |
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99 |
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100 |
// Add the clip path. |
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101 |
svg.append("svg:clipPath") |
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102 |
.attr("id", "clip") |
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103 |
.append("svg:rect") |
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104 |
.attr("width", w) |
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105 |
.attr("height", h); |
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106 |
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107 |
// Add the area path. |
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108 |
svg.append("svg:path") |
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109 |
.attr("class", "area") |
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110 |
.attr("clip-path", "url(#clip)") |
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111 |
.attr("d", area(values)); |
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112 |
|
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113 |
// Add the x-axis. |
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114 |
svg.append("svg:g") |
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115 |
.attr("class", "x axis") |
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116 |
.attr("transform", "translate(0," + h + ")") |
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117 |
.call(xAxis); |
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118 |
|
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119 |
// Add the y-axis. |
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120 |
svg.append("svg:g") |
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121 |
.attr("class", "y axis") |
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122 |
.attr("transform", "translate(" + w + ",0)") |
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123 |
.call(yAxis); |
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124 |
|
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125 |
// Add the line path. |
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126 |
svg.append("svg:path") |
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127 |
.attr("class", "line") |
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128 |
.attr("clip-path", "url(#clip)") |
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129 |
.attr("d", line(values)); |
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130 |
|
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131 |
// Add a small label for the symbol name. |
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132 |
svg.append("svg:text") |
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133 |
.attr("x", w - 6) |
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134 |
.attr("y", h - 6) |
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135 |
.attr("text-anchor", "end") |
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136 |
.text(values[0].symbol); |
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137 |
|
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138 |
// On click, update the x-axis. |
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139 |
svg.on("click", function() { |
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140 |
var n = values.length - 1, |
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141 |
i = Math.floor(Math.random() * n / 2), |
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142 |
j = i + Math.floor(Math.random() * n / 2) + 1; |
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143 |
x.domain([values[i].date, values[j].date]); |
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144 |
var t = svg.transition().duration(750); |
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145 |
t.select(".x.axis").call(xAxis); |
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146 |
t.select(".area").attr("d", area(values)); |
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147 |
t.select(".line").attr("d", line(values)); |
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148 |
}); |
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149 |
}); |
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150 |
|
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151 |
</script> |
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152 |
</body> |
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153 |
</html> |