A basic scatterplot that loads data, scales and axes and updates domains based on extrema. Uses Mike Bostock's margin conventions and the data for Anscombe's Quartet.
forked from kpq's block: Basic starter code for many simple D3 charts
forked from zanarmstrong's block: Basic starter code for many simple D3 charts
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<meta charset="utf-8">
<style type="text/css">
body {
font-family: helvetica, sans;
font-size: 11px;
}
.axis line,
.axis path {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.axis text {
font-size: 8px;
}
.rectangle-group {
text-anchor: middle;
fill: grey
}
.rectangle-group rect {
stroke: grey;
stroke-width: .5
}
</style>
<body>
<h2>Population in San Francisco, by age and gender: 2010 Census</h2>
</body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js" charset="utf-8"></script>
<script type="text/javascript">
var margin = {top: 20, right: 100, bottom: 60, left: 10};
var rectHeight = 20
var catNum = 18
var width = 700 - margin.left - margin.right,
height = rectHeight * catNum;
var svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
var chart = svg.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var xScale = d3.scale.linear()
.range([0,width/2]);
var maleScale = d3.scale.linear()
.range([0,-width/2]);
var yScale = d3.scale.linear()
.range([height,0]);
var maleAxis = d3.svg.axis().scale(maleScale).orient("bottom")
var xAxis = d3.svg.axis()
.scale(xScale)
.orient("bottom");
d3.csv("sfPopulation2010.csv", ready);
function ready(error, data) {
if (error) return console.warn(error);
console.log(data)
// ensure numbers are being interpreted as numbers, not strings
data.forEach(function(d) {
d.female = +d.female;
d.male = +d.male
});
//
var xMax = d3.max(data, function(d) {
if(d.male > d.female) return d.male;
return d.female;
})
xScale.domain([0, xMax]);
maleScale.domain([0,xMax])
//
yScale.domain([0, catNum]);
//
var labels = svg.append("g")
.attr("class", "labels")
labels.append("text").attr("transform", "translate(" + (width / 2 + 14) + "," + 15 + ")")
.text("male | female")
.attr("text-anchor", "middle")
//
chart.append("g")
.attr("class", "x axis")
.attr("transform", "translate(" + width / 2 + "," + (height + 5) + ")")
.call(xAxis);
chart.append("g")
.attr("class", "x axis")
.attr("transform", "translate(" + width / 2 + "," + (height + 5) + ")")
.call(maleAxis);
//
var rectangleGroup = chart.selectAll(".rectangle-group")
.data(data)
.enter()
// and group
.append("g")
.attr("class", "rectangle-group")
.attr("transform", function(d,idx) { return "translate(0," + yScale(idx + 1) + ")"; })
//
rectangleGroup.append("rect")
.attr("class", "female")
.attr("x", width / 2)
.attr("height", rectHeight)
.attr("width", function(d){ return xScale(d.female)})
.attr("y", 0)
.attr("fill", "white")
rectangleGroup.append("rect")
.attr({
"class": "male",
"x": function(d){return width / 2 - xScale(d.male)},
"height": rectHeight,
"width": function(d){ return xScale(d.male)},
"y": 0,
"fill": "#Edf0f8",
})
//
rectangleGroup.append("text")
.text(function(d) { return d.age; })
.attr("dx", xScale(xScale.domain()[1]))
.attr("dy", +12);
}
</script>
https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js