This brushable network supports multiple brushings via the SHIFT key. Click and drag to make the initial selection. Then, while holding down SHIFT, click and drag to add to or remove from the selection. SHIFT-clicking on an individual node toggles its selected state. (The META key may be used in place of SHIFT.)
Brushable Network, II
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license: gpl-3.0 |
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Learn more about bidirectional Unicode characters
<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
.node { | |
stroke: #fff; | |
stroke-width: 1.5px; | |
} | |
.node .selected { | |
stroke: red; | |
} | |
.link { | |
stroke: #999; | |
} | |
.brush .extent { | |
fill-opacity: .1; | |
stroke: #fff; | |
shape-rendering: crispEdges; | |
} | |
</style> | |
<body> | |
<script src="//d3js.org/d3.v3.min.js"></script> | |
<script> | |
var width = 960, | |
height = 500, | |
shiftKey; | |
var svg = d3.select("body") | |
.attr("tabindex", 1) | |
.on("keydown.brush", keyflip) | |
.on("keyup.brush", keyflip) | |
.each(function() { this.focus(); }) | |
.append("svg") | |
.attr("width", width) | |
.attr("height", height); | |
d3.json("graph.json", function(error, graph) { | |
graph.links.forEach(function(d) { | |
d.source = graph.nodes[d.source]; | |
d.target = graph.nodes[d.target]; | |
}); | |
var link = svg.append("g") | |
.attr("class", "link") | |
.selectAll("line") | |
.data(graph.links) | |
.enter().append("line") | |
.attr("x1", function(d) { return d.source.x; }) | |
.attr("y1", function(d) { return d.source.y; }) | |
.attr("x2", function(d) { return d.target.x; }) | |
.attr("y2", function(d) { return d.target.y; }); | |
var brush = svg.append("g") | |
.datum(function() { return {selected: false, previouslySelected: false}; }) | |
.attr("class", "brush") | |
.call(d3.svg.brush() | |
.x(d3.scale.identity().domain([0, width])) | |
.y(d3.scale.identity().domain([0, height])) | |
.on("brushstart", function(d) { | |
node.each(function(d) { d.previouslySelected = shiftKey && d.selected; }); | |
}) | |
.on("brush", function() { | |
var extent = d3.event.target.extent(); | |
node.classed("selected", function(d) { | |
return d.selected = d.previouslySelected ^ | |
(extent[0][0] <= d.x && d.x < extent[1][0] | |
&& extent[0][1] <= d.y && d.y < extent[1][1]); | |
}); | |
}) | |
.on("brushend", function() { | |
d3.event.target.clear(); | |
d3.select(this).call(d3.event.target); | |
})); | |
var node = svg.append("g") | |
.attr("class", "node") | |
.selectAll("circle") | |
.data(graph.nodes) | |
.enter().append("circle") | |
.attr("r", 4) | |
.attr("cx", function(d) { return d.x; }) | |
.attr("cy", function(d) { return d.y; }) | |
.on("mousedown", function(d) { | |
if (shiftKey) d3.select(this).classed("selected", d.selected = !d.selected); | |
else node.classed("selected", function(p) { return p.selected = d === p; }); | |
}); | |
}); | |
function keyflip() { | |
shiftKey = d3.event.shiftKey || d3.event.metaKey; | |
} | |
</script> |
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