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Last active March 31, 2019 21:43
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city temps example
Raw
.block
license: mit
Raw
index.html
<!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 width = 740;
var height = 300;
var margin = {top: 20, bottom: 20, left: 20, right: 20};
// dataset of city temperatures across time
var data = [8, 6, 7, 5, 3, 0, 9];
// clean the data
// get min/max
var xExtent = d3.extent(data);
console.log(xExtent);
// or use extent, which gives back [min, max]
var yMax = d3.max(data);
console.log(yMax);
var xScale = d3.scaleBand()
.domain(data)
.range([margin.left, width - margin.right])
// try different scales, change the ranges, see what happens
var yScale = d3.scaleLinear()
.domain([0, yMax])
.range([height - margin.bottom, margin.top]);
var heightScale = d3.scaleLinear()
.domain([0, yMax])
.range([0, height - margin.top - margin.bottom]);
var xAxis = d3.axisBottom()
.scale(xScale)
// try passing in tick valuess
var yAxis = d3.axisLeft()
.scale(yScale);
var svg = d3.select('svg');
svg.selectAll('rect')
.data(data)
.enter().append('rect')
.attr('x', function(d) {return xScale(d)})
.attr('y', function(d) {return yScale(d)})
.attr('width', (width - margin.left - margin.right)/7)
.attr('height', function(d) {
return heightScale(d);
})
.attr('fill', 'blue')
.attr('stroke', '#fff');
svg.append('g')
.attr('transform', 'translate(' + [0, height - margin.bottom] + ')')
.call(xAxis);
svg.append('g')
.attr('transform', 'translate(' + [margin.left, 0] + ')')
.call(yAxis);
</script>
</body>
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