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jbelmont/.block

Last active September 22, 2017 15:41
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Area Chart
Raw
.block
license: mit
Raw
data.json
[
{
"ticker": "MSFT",
"values": [
{
"date": "2017-08-22",
"close": 73.160004
},
{
"date": "2017-08-23",
"close": 72.720001
},
{
"date": "2017-08-24",
"close": 72.690002
},
{
"date": "2017-08-25",
"close": 72.82
},
{
"date": "2017-08-28",
"close": 72.830002
},
{
"date": "2017-08-29",
"close": 73.050003
},
{
"date": "2017-08-30",
"close": 74.010002
},
{
"date": "2017-08-31",
"close": 74.769997
},
{
"date": "2017-09-01",
"close": 73.940002
},
{
"date": "2017-09-05",
"close": 73.610001
},
{
"date": "2017-09-06",
"close": 73.400002
},
{
"date": "2017-09-07",
"close": 74.339996
},
{
"date": "2017-09-08",
"close": 73.980003
},
{
"date": "2017-09-11",
"close": 74.760002
},
{
"date": "2017-09-12",
"close": 74.68
},
{
"date": "2017-09-13",
"close": 75.209999
},
{
"date": "2017-09-14",
"close": 74.769997
},
{
"date": "2017-09-15",
"close": 75.309998
},
{
"date": "2017-09-18",
"close": 75.160004
},
{
"date": "2017-09-19",
"close": 75.440002
},
{
"date": "2017-09-20",
"close": 74.940002
},
{
"date": "2017-09-21",
"close": 74.209999
},
{
"date": "2017-09-22",
"close": 74.349998
}
]
},
{
"ticker": "AAPL",
"values": [
{
"date": "2017-08-22",
"close": 73.160004
},
{
"date": "2017-08-23",
"close": 72.720001
},
{
"date": "2017-08-24",
"close": 72.690002
},
{
"date": "2017-08-25",
"close": 72.82
},
{
"date": "2017-08-28",
"close": 72.830002
},
{
"date": "2017-08-29",
"close": 73.050003
},
{
"date": "2017-08-30",
"close": 74.010002
},
{
"date": "2017-08-31",
"close": 74.769997
},
{
"date": "2017-09-01",
"close": 73.940002
},
{
"date": "2017-09-05",
"close": 73.610001
},
{
"date": "2017-09-06",
"close": 73.400002
},
{
"date": "2017-09-07",
"close": 74.339996
},
{
"date": "2017-09-08",
"close": 73.980003
},
{
"date": "2017-09-11",
"close": 74.760002
},
{
"date": "2017-09-12",
"close": 74.68
},
{
"date": "2017-09-13",
"close": 75.209999
},
{
"date": "2017-09-14",
"close": 74.769997
},
{
"date": "2017-09-15",
"close": 75.309998
},
{
"date": "2017-09-18",
"close": 75.160004
},
{
"date": "2017-09-19",
"close": 75.440002
},
{
"date": "2017-09-20",
"close": 74.940002
},
{
"date": "2017-09-21",
"close": 74.209999
},
{
"date": "2017-09-22",
"close": 74.349998
}
]
}
]
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; }
.area-chart {
background: lightgray;
border: 1px solid black;
}
</style>
</head>
<body>
<div class="area-chart"><div>
<script>
function setDimensions(selection, key, val) {
selection.attr(key, val);
}
function responsivefy(svg) {
// get container + svg aspect ratio
var container = d3.select(svg.node().parentNode),
width = parseInt(svg.style("width")),
height = parseInt(svg.style("height")),
aspect = width / height;
// add viewBox and preserveAspectRatio properties,
// and call resize so that svg resizes on inital page load
svg.attr("viewBox", "0 0 " + width + " " + height)
.attr("preserveAspectRatio", "xMinYMid")
.call(resize);
// to register multiple listeners for same event type,
// you need to add namespace, i.e., 'click.foo'
// necessary if you call invoke this function for multiple svgs
// api docs: https://github.com/mbostock/d3/wiki/Selections#on
d3.select(window).on("resize." + container.attr("id"), resize);
// get width of container and resize svg to fit it
function resize() {
var targetWidth = parseInt(container.style("width"));
svg.attr("width", targetWidth);
svg.attr("height", Math.round(targetWidth / aspect));
}
}
const margin = {
top: 10,
right: 20,
bottom: 30,
left: 30
};
const dimensions = {
width: 400,
height: 565
};
const svg = d3.select('.area-chart')
.append('svg')
.call(setDimensions, 'width', dimensions.width + margin.left + margin.right)
.call(setDimensions, 'height', dimensions.height + margin.top + margin.bottom)
.call(responsivefy)
.append('g')
.attr('transform', `translate(${margin.left},${margin.right})`);
d3.json('data.json', (err, data) => {
if (err) console.error(err);
const parseTime = d3.timeParse('%Y-%m-%d');
data.forEach(company => {
company.values.forEach(d => {
d.date = parseTime(d.date);
d.close = +d.close;
});
});
let xScale = d3.scaleTime()
.domain([
d3.min(data, co => d3.min(co.values, d => d.date)),
d3.max(data, co => d3.max(co.values, d => d.date))
])
.range([0, dimensions.width])
svg.append('g')
.attr('transform', `translate(0, ${dimensions.height})`)
.call(d3.axisBottom(xScale).ticks(5))
let yScale = d3.scaleLinear()
.domain([
d3.min(data, co => d3.min(co.values, d => d.close)),
d3.max(data, co => d3.max(co.values, d => d.close))
])
.range([0, dimensions.height])
svg.append('g')
.call(d3.axisLeft(yScale));
let area = d3.area()
.x(d => xScale(d.date))
.y0(yScale(yScale.domain()[0]))
.y1(d => yScale(d.close))
.curve(d3.curveCatmullRom.alpha(0.5));
svg
.selectAll('.area')
.data(data)
.enter()
.append('path')
.attr('class', 'area')
.attr('d', d => area(d.values))
.style('stroke', (d, i) => ['#FF9900', '#3369E8'][i])
.style('stroke-width', 2)
.style('fill', (d, i) => ['#FF9900', '#3369E8'][i])
.style('fill-opacity', 0.25);
});
</script>
</body>
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