|
<!DOCTYPE html> |
|
<meta charset="utf-8"> |
|
<style> |
|
|
|
.overlay { |
|
fill: none; |
|
pointer-events: all; |
|
} |
|
|
|
.axis path, |
|
.axis line { |
|
fill: none; |
|
stroke: #000; |
|
shape-rendering: crispEdges; |
|
} |
|
|
|
.dot { |
|
stroke: none; |
|
} |
|
|
|
.dot.selected { |
|
stroke: #000000; |
|
stroke-width: 2px; |
|
} |
|
|
|
a { |
|
color: #5BBEAA; |
|
} |
|
|
|
.extent { |
|
fill: #000; |
|
fill-opacity: .125; |
|
stroke: #fff; |
|
} |
|
|
|
|
|
</style> |
|
<body> |
|
<a class="btn" href="javascript:void(0);" onclick="get_selection();">Get Selection</a> |
|
<a class="btn" href="javascript:void(0);" onclick="clear_selection();">Clear Selection</a> |
|
<!-- // <script src="d3.v3.min.js"></script> --> |
|
<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> |
|
<script> |
|
var margin = {top: 20, right: 20, bottom: 30, left: 40}, |
|
width = 800 - margin.left - margin.right, |
|
height = 400 - margin.top - margin.bottom; |
|
|
|
var x = d3.scale.linear() |
|
.range([0, width]); |
|
|
|
var y = d3.scale.linear() |
|
.range([height, 0]); |
|
|
|
var color = d3.scale.category10(); |
|
|
|
var xAxis = d3.svg.axis() |
|
.scale(x) |
|
.orient("bottom"); |
|
|
|
var yAxis = d3.svg.axis() |
|
.scale(y) |
|
.orient("left"); |
|
|
|
var svg = d3.select("body") |
|
.append("svg") |
|
.attr("width", width + margin.left + margin.right) |
|
.attr("height", height + margin.top + margin.bottom); |
|
|
|
var shiftKey; |
|
|
|
var rect, |
|
node; |
|
|
|
svg = svg.append("g") |
|
.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); |
|
|
|
var selection = []; |
|
|
|
function get_selection(){ |
|
selection = []; |
|
node.each(function(d) { |
|
if (d.selected) { |
|
selection.push(d); |
|
} |
|
}); |
|
console.log(selection); |
|
} |
|
|
|
function clear_selection() { |
|
node.classed('selected', function (d) { return d.selected = false; }) |
|
} |
|
|
|
d3.tsv("data.tsv", function(error, data) { |
|
data.forEach(function(d) { |
|
d.sepalLength = +d.sepalLength; |
|
d.sepalWidth = +d.sepalWidth; |
|
if (d.sepalWidth == 3) { |
|
d.selected = true; |
|
} |
|
}); |
|
|
|
x.domain(d3.extent(data, function(d) { return d.sepalWidth; })).nice(); |
|
y.domain(d3.extent(data, function(d) { return d.sepalLength; })).nice(); |
|
|
|
svg = svg.call(d3.behavior.zoom().x(x).y(y).on("zoom", zoom)); |
|
|
|
svg.append("g") |
|
.attr("class", "x axis") |
|
.attr("transform", "translate(0," + height + ")") |
|
.call(xAxis) |
|
.append("text") |
|
.attr("class", "label") |
|
.attr("x", width) |
|
.attr("y", -6) |
|
.style("text-anchor", "end") |
|
.text("Sepal Width (cm)"); |
|
|
|
svg.append("g") |
|
.attr("class", "y axis") |
|
.call(yAxis) |
|
.append("text") |
|
.attr("class", "label") |
|
.attr("transform", "rotate(-90)") |
|
.attr("y", 6) |
|
.attr("dy", ".71em") |
|
.style("text-anchor", "end") |
|
.text("Sepal Length (cm)") |
|
|
|
|
|
|
|
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) { |
|
console.log('brushstart'); |
|
node.each(function(d) { d.previouslySelected = shiftKey && d.selected; }); |
|
if (!shiftKey) { |
|
d3.event.target.clear(); |
|
d3.select(this).call(d3.event.target); |
|
} |
|
}) |
|
.on("brush", function() { |
|
if (shiftKey) { |
|
console.log('shiftKey', shiftKey); |
|
var extent = d3.event.target.extent(); |
|
node.classed("selected", function(d) { |
|
return d.selected = d.previouslySelected ^ |
|
(extent[0][0] <= x(d.sepalWidth) && x(d.sepalWidth) < extent[1][0] |
|
&& extent[0][1] <= y(d.sepalLength) && y(d.sepalLength) < extent[1][1]); |
|
}); |
|
} else { |
|
d3.event.target.clear(); |
|
d3.select(this).call(d3.event.target); |
|
} |
|
}) |
|
.on("brushend", function() { |
|
d3.event.target.clear(); |
|
d3.select(this).call(d3.event.target); |
|
})); |
|
|
|
function zoom() { |
|
if (shiftKey) { |
|
console.log('zoom shiftKey'); |
|
return; |
|
console.log('zoom wtf'); |
|
} |
|
console.log('zoom'); |
|
node.attr("cx", function(d) { return x(d.sepalWidth); }) |
|
.attr("cy", function(d) { return y(d.sepalLength); }); |
|
d3.select('.x.axis').call(xAxis); |
|
d3.select('.y.axis').call(yAxis); |
|
} |
|
|
|
rect = svg.append('rect') |
|
.attr('pointer-events', 'all') |
|
.attr('width', width) |
|
.attr('height', height) |
|
.style('fill', 'none'); |
|
|
|
node = svg.selectAll(".dot") |
|
.data(data) |
|
.enter().append("circle") |
|
.attr("class", "dot") |
|
.attr("r", function(d) { return d.selected ? 5 : 6; }) |
|
.attr("cx", function(d) { return x(d.sepalWidth); }) |
|
.attr("cy", function(d) { return y(d.sepalLength); }) |
|
.style("fill", function(d) { return color(d.species); }) |
|
.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; |
|
}); |
|
} |
|
}); |
|
|
|
node.classed('selected', function (d) {return d.selected;}) |
|
|
|
var legend = svg.selectAll(".legend") |
|
.data(color.domain()) |
|
.enter().append("g") |
|
.attr("class", "legend") |
|
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; }); |
|
|
|
legend.append("rect") |
|
.attr("x", width - 18) |
|
.attr("width", 18) |
|
.attr("height", 18) |
|
.style("fill", color); |
|
|
|
legend.append("text") |
|
.attr("x", width - 24) |
|
.attr("y", 9) |
|
.attr("dy", ".35em") |
|
.style("text-anchor", "end") |
|
.text(function(d) { return d; }); |
|
|
|
d3.select(window).on("keydown", function() { |
|
shiftKey = d3.event.shiftKey; |
|
if (shiftKey) { |
|
rect = rect.attr('pointer-events', 'none'); |
|
} else { |
|
rect = rect.attr('pointer-events', 'all'); |
|
} |
|
}); |
|
|
|
d3.select(window).on("keyup", function() { |
|
shiftKey = d3.event.shiftKey; |
|
if (shiftKey) { |
|
rect = rect.attr('pointer-events', 'none'); |
|
} else { |
|
rect = rect.attr('pointer-events', 'all'); |
|
} |
|
}); |
|
|
|
}); |
|
|
|
</script> |
Awesome little bit of d3 here! One issue I'm seeing it related to the brush selection. It seems like the data points are sill moving around when holding down shift (still getting zoom / pan updates) which throws the selection off. I'm on chrome and safari