| 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
c0b4a8b5a012
add toolkit.html + démonstrateurs
Nicolas Sauret <nicolas.sauret@iri.centrepompidou.fr>
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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<title>Zoom</title> |
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6 |
<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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9 |
<style type="text/css"> |
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path { |
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fill: steelblue; |
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13 |
} |
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14 |
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15 |
line { |
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16 |
stroke: #000; |
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17 |
shape-rendering: crispEdges; |
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18 |
} |
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</style> |
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21 |
</head> |
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22 |
<body> |
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23 |
<script type="text/javascript"> |
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24 |
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var w = 960, |
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h1 = 400, |
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h2 = 40, |
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p = 20, |
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29 |
x0, // start of focus region |
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x1, // end of focus region |
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xx, // drag state |
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time = d3.time.format("%Y-%m-%d"), |
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x = d3.scale.linear().range([0, w]), |
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y1 = d3.scale.linear().range([h1 - p, 0]), |
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y2 = d3.scale.linear().range([h2, 0]); |
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parents:
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36 |
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var svg = d3.select("body") |
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.append("svg:svg") |
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39 |
.attr("width", w) |
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.attr("height", h1 + h2); |
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41 |
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42 |
// Focus view. |
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var focus = svg.append("svg:g"); |
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44 |
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// Context view. |
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var context = svg.append("svg:g") |
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.attr("transform", "translate(0," + h1 + ")"); |
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48 |
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49 |
d3.csv("dji.csv", function(csv) { |
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50 |
var minX, |
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51 |
maxX, |
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maxY = -Infinity; |
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53 |
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// Compute x- and y-extent. |
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csv.reverse(); |
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for (var i = 0, n = csv.length, o; i < n; i++) { |
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o = csv[i]; |
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o = csv[i] = {x: +time.parse(o.Date), y: +o.Close}; |
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if (o.y > maxY) maxY = o.y; |
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} |
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61 |
minX = csv[0].x; |
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maxX = csv[n - 1].x; |
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63 |
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64 |
// Update x- and y-scales. |
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65 |
x.domain([minX, maxX]); |
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66 |
y1.domain([0, maxY]); |
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y2.domain([0, maxY]); |
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68 |
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69 |
// Focus view. |
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70 |
focus.append("svg:path") |
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71 |
.data([csv]) |
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72 |
.attr("d", d3.svg.area() |
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73 |
.x(function(d) { return x(d.x); }) |
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74 |
.y0(y1(0)) |
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75 |
.y1(function(d) { return y1(d.y); })); |
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76 |
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77 |
focus.append("svg:line") |
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78 |
.attr("x1", 0) |
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79 |
.attr("x2", w) |
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80 |
.attr("y1", y1(0)) |
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81 |
.attr("y2", y1(0)); |
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82 |
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83 |
// Context view. |
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84 |
context.append("svg:rect") |
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85 |
.attr("width", w) |
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86 |
.attr("height", h2) |
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87 |
.attr("fill", "none") |
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88 |
.attr("pointer-events", "all") |
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89 |
.attr("cursor", "crosshair") |
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90 |
.on("mousedown", mousedown); |
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91 |
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92 |
context.append("svg:path") |
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parents:
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93 |
.data([csv]) |
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parents:
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94 |
.attr("pointer-events", "none") |
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95 |
.attr("d", d3.svg.area() |
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parents:
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96 |
.x(function(d) { return x(d.x); }) |
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97 |
.y0(y2(0)) |
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98 |
.y1(function(d) { return y2(d.y); })); |
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99 |
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100 |
context.append("svg:line") |
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101 |
.attr("x1", 0) |
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102 |
.attr("x2", w) |
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103 |
.attr("y1", y2(0)) |
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104 |
.attr("y2", y2(0)); |
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105 |
|
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106 |
// Active focus region. |
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107 |
active = context.append("svg:rect") |
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108 |
.attr("pointer-events", "none") |
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109 |
.attr("id", "active") |
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110 |
.attr("x", x(x0 = minX)) |
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111 |
.attr("y", 0) |
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112 |
.attr("height", h2) |
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113 |
.attr("width", x(x1 = (minX + 1e11)) - x(x0)) |
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114 |
.attr("fill", "lightcoral") |
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115 |
.attr("fill-opacity", .5); |
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116 |
}); |
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117 |
|
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118 |
d3.select(window) |
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119 |
.on("mousemove", mousemove) |
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120 |
.on("mouseup", mouseup); |
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121 |
|
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122 |
function mousedown() { |
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123 |
xx = x.invert(d3.svg.mouse(this)[0]); |
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124 |
} |
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125 |
|
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126 |
function mousemove() { |
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127 |
if (xx != null) { |
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128 |
|
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129 |
// Compute the new (clamped) focus region. |
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130 |
var xy = x.invert(d3.svg.mouse(active[0][0])[0]); |
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131 |
if (xx < xy) { x0 = xx; x1 = xy; } |
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132 |
else if (xx > xy) { x0 = xy; x1 = xx; } |
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133 |
else return; |
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134 |
x0 = Math.max(x.domain()[0], x0); |
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135 |
x1 = Math.min(x.domain()[1], x1); |
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136 |
|
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137 |
// Update the x-scale. TODO Recycle this scale? |
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138 |
var tx = d3.scale.linear() |
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139 |
.domain([x0, x1]) |
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140 |
.range([0, w]); |
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141 |
|
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142 |
// Recompute the focus path. |
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143 |
focus.select("path") |
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144 |
.attr("d", d3.svg.area() |
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145 |
.x(function(d) { return tx(d.x); }) |
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146 |
.y0(y1(0)) |
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147 |
.y1(function(d) { return y1(d.y); })); |
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148 |
|
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149 |
// Reposition the active region rect. |
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150 |
active |
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151 |
.attr("x", x(x0)) |
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152 |
.attr("width", x(x1) - x(x0)); |
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153 |
} |
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154 |
} |
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155 |
|
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156 |
function mouseup() { |
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157 |
xx = null; |
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158 |
} |
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159 |
|
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160 |
</script> |
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161 |
</body> |
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162 |
</html> |