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larsenmtl/.block

Created July 30, 2016 17:03
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Scatter Plot w/Histogram Axes
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.block
license: gpl-3.0
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README.md
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index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>
</style>
</head>
<body>
<script src="//d3js.org/d3.v4.min.js"></script>
<script>
// set the dimensions and margins of the graph
var margin = {
top: 80,
right: 80,
bottom: 20,
left: 20
},
width = 400 - margin.left - margin.right,
height = 400 - margin.top - margin.bottom;
var svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
var g = svg.append("g")
.attr("transform",
"translate(" + margin.left + "," + margin.top + ")");
var x = d3.scaleLinear().range([0, width]).domain([0, 10]),
y = d3.scaleLinear().range([height, 0]).domain([0, 10]);
// Add the X Axis
g.append("g")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x));
// Add the Y Axis
g.append("g")
.call(d3.axisLeft(y));
var random = d3.randomNormal(0, 1.2),
data = d3.range(100).map(function() {
return [random() + 5, random() + 5];
});
g.selectAll(".point")
.data(data)
.enter()
.append("circle")
.attr("cx", function(d) {
return x(d[0]);
})
.attr("cy", function(d) {
return y(d[1]);
})
.attr("r", 7)
.style("fill", "steelblue")
.style("stroke", "lightgray");
// top histogram
var gTop = svg.append("g")
.attr("transform",
"translate(" + margin.left + "," + 0 + ")");
var xBins = d3.histogram()
.domain(x.domain())
.thresholds(x.ticks(10))
.value(function(d) {
return d[0];
})(data);
var xy = d3.scaleLinear()
.domain([0, d3.max(xBins, function(d) {
return d.length;
})])
.range([margin.top, 0]);
var xBar = gTop.selectAll(".bar")
.data(xBins)
.enter().append("g")
.attr("class", "bar")
.attr("transform", function(d) {
return "translate(" + x(d.x0) + "," + xy(d.length) + ")";
});
var bWidth = x(xBins[0].x1) - x(xBins[0].x0) - 1;
xBar.append("rect")
.attr("x", 1)
.attr("width", bWidth)
.attr("height", function(d) {
return margin.top - xy(d.length);
})
.style("fill", "steelblue");
xBar.append("text")
.attr("dy", ".75em")
.attr("y", 2)
.attr("x", bWidth / 2)
.attr("text-anchor", "middle")
.text(function(d) {
return d.length < 4 ? "" : d.length;
})
.style("fill", "white")
.style("font", "9px sans-serif");
// right histogram
var gRight = svg.append("g")
.attr("transform",
"translate(" + (margin.left + width) + "," + margin.top + ")");
var yBins = d3.histogram()
.domain(y.domain())
.thresholds(y.ticks(10))
.value(function(d) {
return d[1];
})(data);
var yx = d3.scaleLinear()
.domain([0, d3.max(yBins, function(d) {
return d.length;
})])
.range([0, margin.right]);
var yBar = gRight.selectAll(".bar")
.data(yBins)
.enter().append("g")
.attr("class", "bar")
.attr("transform", function(d) {
return "translate(" + 0 + "," + y(d.x1) + ")";
});
var bWidth = y(yBins[0].x0) - y(yBins[0].x1) - 1;
yBar.append("rect")
.attr("y", 1)
.attr("width", function(d){
return yx(d.length);
})
.attr("height", bWidth)
.style("fill", "steelblue");
yBar.append("text")
.attr("dx", "-.75em")
.attr("y", bWidth / 2 + 1)
.attr("x", function(d){
return yx(d.length);
})
.attr("text-anchor", "middle")
.text(function(d) {
return d.length < 4 ? "" : d.length;
})
.style("fill", "white")
.style("font", "9px sans-serif");
</script>
</body>
</html>
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