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jpmarindiaz/.block

Last active May 10, 2019 10:37
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simple d3 barchart with transition
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;
}
.bars {
fill: #89ffac;
}
text.label {
text-anchor: middle;
font-size: 0.8em;
fill: #5e2f44;
font-family: "monospace";
}
#chart {
width: 100%;
height: 500px;
}
</style>
</head>
<body>
<div id="chart"></div>
<script>
// Feel free to change or delete any of the code you see in this editor!
var svg = d3.select("div").append("svg")
.attr("width", 960)
.attr("height", 500)
.attr('transform', 'translate(50,50)')
// svg.append("text")
// .text("Edit the code below to change me!")
// .attr("y", 200)
// .attr("x", 120)
// .attr("font-size", 36)
// .attr("font-family", "monospace");
var margin = {top: 40, right: 20, bottom: 20, left: 40};
var chartDimensions = d3.select("#chart").node().getBoundingClientRect();
//var width = window.innerWidth - margin.left - margin.right;
//var height = window.innerHeight - margin.top - margin.bottom;
var width = chartDimensions.width - margin.left - margin.right;
var height = chartDimensions.height - margin.top - margin.bottom;
// data
var data = [
{key: "a", value: 20},
{key: "b", value: 30},
{key: "c", value: 550},
{key: "d", value: 200},
{key: "e", value: 50}
];
var yMax = d3.max(data, function(d){return d.value});
console.log(yMax)
var y = d3.scaleLinear()
.domain([0, yMax *1.15])
.range([height, 0]);
var xValues = data.map(function(d){
return d.key
});
console.log(xValues);
var x = d3.scaleBand()
.domain(xValues)
.rangeRound([0, width])
.paddingInner(0.2)
.paddingOuter(0.2);
svg
.append('g')
.selectAll('.bars')
.data(data)
.enter()
.append('rect')
.attr('class','bars')
.attr('x', function(d){return x(d.key)})
.attr('width', x.bandwidth())
.attr('height', 0)
.attr('y', y(0))
.transition()
.duration(500)
.ease(d3.easeElasticInOut)
.delay(function(d, i){ return i * 500})
.attr('height', function(d){
return height - y(d.value)
})
.attr('y', function(d){
return y(d.value)
});
//.attr('color', '#000088')
var xAxis = d3.axisBottom()
.scale(x);
svg.append('g')
.attr('transform', 'translate(0,' + height + ')')
.call(xAxis)
var yAxis = d3.axisRight()
.scale(y);
svg.append('g')
.attr('transform', 'translate(5,0)')
.call(yAxis)
svg
.selectAll(".label")
.data(data)
.enter()
.append('text')
.attr('class', 'label')
.attr('dx', function(d) {
return x(d.key) + x.bandwidth()/2
})
.attr('dy', function(d) {return y(d.value) - 5})
.text(function(d){ return d.value})
.style('opacity', 0)
.transition()
.duration(1000)
.delay(500)
.style('opacity', 1)
</script>
</body>
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