| 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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<!DOCTYPE html> |
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<html> |
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<head> |
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4 |
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/> |
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<title>Brush</title> |
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<script type="text/javascript" src="../../d3.js"></script> |
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7 |
<style type="text/css"> |
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svg { |
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font: 10px sans-serif; |
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} |
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circle { |
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14 |
-webkit-transition: fill-opacity 250ms linear; |
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15 |
} |
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17 |
.selecting circle { |
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fill-opacity: .2; |
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19 |
} |
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.selecting circle.selected { |
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22 |
stroke: #f00; |
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} |
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.axis path, .axis line { |
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26 |
fill: none; |
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stroke: #000; |
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shape-rendering: crispEdges; |
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29 |
} |
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31 |
.brush .extent { |
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stroke: #fff; |
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fill-opacity: .125; |
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parents:
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shape-rendering: crispEdges; |
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35 |
} |
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parents:
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37 |
</style> |
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38 |
</head> |
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39 |
<body> |
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<script type="text/javascript"> |
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var data = d3.range(800).map(Math.random); |
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var m = [10, 10, 20, 10], |
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w = 960 - m[1] - m[3], |
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h = 100 - m[0] - m[2]; |
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47 |
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var x = d3.scale.linear().range([0, w]), |
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y = d3.random.normal(h / 2, h / 8); |
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50 |
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var svg = d3.select("body").append("svg:svg") |
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.attr("width", w + m[1] + m[3]) |
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.attr("height", h + m[0] + m[2]) |
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.append("svg:g") |
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.attr("transform", "translate(" + m[3] + "," + m[0] + ")"); |
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svg.append("svg:g") |
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.attr("class", "x axis") |
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.attr("transform", "translate(0," + h + ")") |
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.call(d3.svg.axis().scale(x).orient("bottom")); |
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61 |
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var circle = svg.selectAll("circle") |
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.data(data) |
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.enter().append("svg:circle") |
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.attr("transform", function(d) { return "translate(" + x(d) + "," + y() + ")"; }) |
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.attr("r", 3.5); |
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67 |
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svg.append("svg:g") |
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69 |
.attr("class", "brush") |
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.call(d3.svg.brush().x(x) |
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71 |
.on("brushstart", brushstart) |
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.on("brush", brush) |
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73 |
.on("brushend", brushend)) |
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.selectAll("rect") |
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.attr("height", h); |
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76 |
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function brushstart() { |
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svg.classed("selecting", true); |
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79 |
} |
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80 |
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81 |
function brush() { |
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var s = d3.event.target.extent(); |
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circle.classed("selected", function(d) { return s[0] <= d && d < s[1]; }); |
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84 |
} |
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85 |
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86 |
function brushend() { |
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svg.classed("selecting", !d3.event.target.empty()); |
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88 |
} |
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89 |
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90 |
</script> |
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91 |
</body> |
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92 |
</html> |