| author | Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr> |
| Thu, 10 Apr 2014 14:20:23 +0200 | |
| changeset 47 | c0b4a8b5a012 |
| permissions | -rw-r--r-- |
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47
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add toolkit.html + démonstrateurs
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parents:
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1 |
<!DOCTYPE html> |
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<html> |
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3 |
<head> |
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4 |
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/> |
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5 |
<title>Parallel Coordinates</title> |
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6 |
<style type="text/css"> |
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7 |
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8 |
svg { |
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font: 10px sans-serif; |
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} |
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11 |
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12 |
.background path { |
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13 |
fill: none; |
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stroke: #ccc; |
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15 |
stroke-opacity: .4; |
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c0b4a8b5a012
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Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
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16 |
shape-rendering: crispEdges; |
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c0b4a8b5a012
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17 |
} |
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18 |
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.foreground path { |
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fill: none; |
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Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
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21 |
stroke: steelblue; |
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22 |
stroke-opacity: .7; |
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23 |
} |
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24 |
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25 |
.brush .extent { |
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26 |
fill-opacity: .3; |
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c0b4a8b5a012
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stroke: #fff; |
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28 |
shape-rendering: crispEdges; |
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29 |
} |
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30 |
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31 |
.axis line, .axis path { |
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32 |
fill: none; |
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c0b4a8b5a012
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33 |
stroke: #000; |
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c0b4a8b5a012
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parents:
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34 |
shape-rendering: crispEdges; |
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35 |
} |
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36 |
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37 |
.axis text { |
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38 |
text-shadow: 0 1px 0 #fff; |
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39 |
} |
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40 |
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41 |
</style> |
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42 |
</head> |
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43 |
<body> |
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44 |
<script type="text/javascript" src="../../d3.js"></script> |
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45 |
<script type="text/javascript" src="../../d3.csv.js"></script> |
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46 |
<script type="text/javascript"> |
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47 |
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48 |
var m = [30, 10, 10, 10], |
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w = 960 - m[1] - m[3], |
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h = 500 - m[0] - m[2]; |
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51 |
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var x = d3.scale.ordinal().rangePoints([0, w], 1), |
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53 |
y = {}; |
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54 |
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var line = d3.svg.line(), |
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axis = d3.svg.axis().orient("left"), |
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57 |
background, |
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58 |
foreground; |
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59 |
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var svg = d3.select("body").append("svg:svg") |
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61 |
.attr("width", w + m[1] + m[3]) |
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62 |
.attr("height", h + m[0] + m[2]) |
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63 |
.append("svg:g") |
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64 |
.attr("transform", "translate(" + m[3] + "," + m[0] + ")"); |
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65 |
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66 |
d3.csv("cars.csv", function(cars) { |
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67 |
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// Extract the list of dimensions and create a scale for each. |
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69 |
x.domain(dimensions = d3.keys(cars[0]).filter(function(d) { |
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return d != "name" && (y[d] = d3.scale.linear() |
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.domain(d3.extent(cars, function(p) { return +p[d]; })) |
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72 |
.range([h, 0])); |
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73 |
})); |
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74 |
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// Add grey background lines for context. |
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76 |
background = svg.append("svg:g") |
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77 |
.attr("class", "background") |
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78 |
.selectAll("path") |
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79 |
.data(cars) |
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80 |
.enter().append("svg:path") |
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81 |
.attr("d", path); |
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82 |
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83 |
// Add blue foreground lines for focus. |
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84 |
foreground = svg.append("svg:g") |
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85 |
.attr("class", "foreground") |
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86 |
.selectAll("path") |
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87 |
.data(cars) |
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88 |
.enter().append("svg:path") |
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89 |
.attr("d", path); |
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90 |
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91 |
// Add a group element for each dimension. |
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92 |
var g = svg.selectAll(".dimension") |
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93 |
.data(dimensions) |
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94 |
.enter().append("svg:g") |
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95 |
.attr("class", "dimension") |
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96 |
.attr("transform", function(d) { return "translate(" + x(d) + ")"; }); |
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97 |
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98 |
// Add an axis and title. |
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99 |
g.append("svg:g") |
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100 |
.attr("class", "axis") |
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101 |
.each(function(d) { d3.select(this).call(axis.scale(y[d])); }) |
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102 |
.append("svg:text") |
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103 |
.attr("text-anchor", "middle") |
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104 |
.attr("y", -9) |
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105 |
.text(String); |
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106 |
|
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107 |
// Add and store a brush for each axis. |
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108 |
g.append("svg:g") |
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109 |
.attr("class", "brush") |
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110 |
.each(function(d) { d3.select(this).call(y[d].brush = d3.svg.brush().y(y[d]).on("brush", brush)); }) |
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111 |
.selectAll("rect") |
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112 |
.attr("x", -8) |
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113 |
.attr("width", 16); |
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114 |
}); |
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115 |
|
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116 |
// Returns the path for a given data point. |
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117 |
function path(d) { |
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118 |
return line(dimensions.map(function(p) { return [x(p), y[p](d[p])]; })); |
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119 |
} |
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120 |
|
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121 |
// Handles a brush event, toggling the display of foreground lines. |
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122 |
function brush() { |
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123 |
var actives = dimensions.filter(function(p) { return !y[p].brush.empty(); }), |
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124 |
extents = actives.map(function(p) { return y[p].brush.extent(); }); |
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125 |
foreground.style("display", function(d) { |
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126 |
return actives.every(function(p, i) { |
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127 |
return extents[i][0] <= d[p] && d[p] <= extents[i][1]; |
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128 |
}) ? null : "none"; |
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129 |
}); |
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130 |
} |
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131 |
|
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132 |
</script> |
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133 |
</body> |
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134 |
</html> |