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highcharts/2-polar-rings #4

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highcharts/2-polar-rings #4

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629f561
Created a chart, first version of the solution
jszuminski Dec 8, 2022
9867af5
Updated chart radius & fixed small code issues
jszuminski Dec 14, 2022
c09c6ac
Resolved issues after first code review
jszuminski Dec 14, 2022
560dae3
Resolved issues after second code review
jszuminski Dec 14, 2022
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8 changes: 4 additions & 4 deletions highcharts-api/highcharts/2-polar-rings/index.html
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Original file line number Diff line number Diff line change
@@ -1,17 +1,17 @@
<!doctype html>

<html>
<head>

<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1">

<script src="https://code.highcharts.com/highcharts.js"></script>

<script src="https://code.highcharts.com/highcharts-more.js"></script>
</head>

<body>
<div id="container"></div>
<script src="main.js"></script>
</body>

<script src="main.js"></script>
</html>
82 changes: 82 additions & 0 deletions highcharts-api/highcharts/2-polar-rings/main.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,82 @@
const getRandomData = (length) => Array.from({ length }, () => Math.floor(Math.random() * 10));

const chart = Highcharts.chart('container', {
chart: {
polar: true,

events: {
load() {
const chart = this,
maxY = chart.yAxis[0].dataMax;

chart.yAxis[0].update({
max: maxY * 2,
plotLines: [{
color: 'green',
value: 1.5 * maxY,
dashStyle: 'dash',
width: 2
}, {
color: 'red',
value: 1.75 * maxY,
width: 1.5
}]
});
},

render() {
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const chart = this,
radius = chart.yAxis[0].toPixels(2 * chart.yAxis[0].dataMax) * 2;

if(chart.circle) {
chart.circle.attr({
x: chart.chartWidth / 2,
y: chart.plotHeight / 2 + chart.plotTop,
radius
});
} else {
chart.circle = chart.renderer.circle(chart.chartWidth / 2, chart.chartHeight / 2 - 20, radius).attr({
fill: 'transparent',
stroke: 'dodgerblue',
'stroke-width': 2
}).add();
}
},
}
},

title: {
text: ''
},

xAxis: {
categories: ['Jan', ' Feb', 'Mar']
},

plotOptions: {
series: {
dataLabels: {
enabled: true,
formatter() {
return this.point.y === this.point.series.yAxis.dataMax ? 'max' : '';
}
}
}
},

series: [{
type: 'column',
name: 'Tokyo',
data: getRandomData(3)
}, {
type: 'column',
name: 'New York',
data: getRandomData(3)
}, {
type: 'column',
name: 'London',
data: getRandomData(3)
}]

});