|
<!DOCTYPE html> |
|
<head> |
|
<meta charset="utf-8"> |
|
<script src="https://d3js.org/d3.v4.min.js"></script> |
|
<style> |
|
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } |
|
svg { |
|
width: 100%; |
|
height: 100%; |
|
} |
|
</style> |
|
</head> |
|
|
|
<body> |
|
<svg></svg> |
|
<script> |
|
var city = 'New York'; |
|
var margin = {top: 20, bottom: 20, left: 40, right: 20}; |
|
var width = 800 - margin.left - margin.right; |
|
var height = 300 - margin.top - margin.bottom; |
|
var rectWidth = 2; |
|
|
|
var chart = d3.select('svg') |
|
.attr('width', width + margin.left + margin.right) |
|
.attr('height', height + margin.top + margin.bottom) |
|
.append('g') |
|
.attr('transform', `translate(${margin.left}, ${margin.top})`) |
|
|
|
// dataset of city temperatures across time |
|
d3.tsv('data.tsv', (err, data) => { |
|
data.forEach(d => { |
|
d.date = d3.timeParse("%Y%m%d")(d.date); |
|
d.date = new Date(d.date); // x |
|
d[city] = ++d[city]; // y |
|
}); |
|
|
|
var yScale = |
|
d3.scaleLinear() |
|
.domain([0, d3.extent(data, d => d[city])[1]]) |
|
.range([height, 0]); |
|
|
|
var xScale = |
|
d3.scaleTime() |
|
.domain(d3.extent(data, d => d.date)) |
|
.range([0, width]); |
|
|
|
var yAxis = d3.axisLeft(yScale); |
|
var xAxis = d3.axisBottom(xScale); |
|
|
|
chart |
|
.append('g') |
|
.attr('transform', `translate(0, ${height})`) |
|
.call(xAxis); |
|
|
|
chart |
|
.append('g') |
|
.call(yAxis); |
|
|
|
chart |
|
.selectAll('rect') |
|
.data(data) |
|
.enter().append('rect') |
|
.attr('x', (d, i) => xScale(d.date)) |
|
.attr('y', d => yScale(d[city])) |
|
.attr('width', rectWidth) |
|
.attr('height', d => height - yScale(d[city])) |
|
.attr('fill', 'green') |
|
.attr('stroke', '#fff') |
|
|
|
|
|
}); |
|
</script> |
|
</body> |