How to take the middle out of a highchart donut chart? - highcharts

Question

I am modifying this donut chart and need to remove the middle and replace it with a text:
http://jsfiddle.net/gh/get/jquery/1.9.1/highslide-software/highcharts.com/tree/master/samples/highcharts/demo/pie-donut/
What is the best way to do that?
$(function () {
var colors = Highcharts.getOptions().colors,
categories = ['MSIE', 'Firefox', 'Chrome', 'Safari', 'Opera'],
name = 'Browser brands',
data = [{
y: 55.11,
color: colors[0],
drilldown: {
name: 'MSIE versions',
categories: ['MSIE 6.0', 'MSIE 7.0', 'MSIE 8.0', 'MSIE 9.0'],
data: [10.85, 7.35, 33.06, 2.81],
color: colors[0]
}
}, {
y: 21.63,
color: colors[1],
drilldown: {
name: 'Firefox versions',
categories: ['Firefox 2.0', 'Firefox 3.0', 'Firefox 3.5', 'Firefox 3.6', 'Firefox 4.0'],
data: [0.20, 0.83, 1.58, 13.12, 5.43],
color: colors[1]
}
}, {
y: 11.94,
color: colors[2],
drilldown: {
name: 'Chrome versions',
categories: ['Chrome 5.0', 'Chrome 6.0', 'Chrome 7.0', 'Chrome 8.0', 'Chrome 9.0',
'Chrome 10.0', 'Chrome 11.0', 'Chrome 12.0'],
data: [0.12, 0.19, 0.12, 0.36, 0.32, 9.91, 0.50, 0.22],
color: colors[2]
}
}, {
y: 7.15,
color: colors[3],
drilldown: {
name: 'Safari versions',
categories: ['Safari 5.0', 'Safari 4.0', 'Safari Win 5.0', 'Safari 4.1', 'Safari/Maxthon',
'Safari 3.1', 'Safari 4.1'],
data: [4.55, 1.42, 0.23, 0.21, 0.20, 0.19, 0.14],
color: colors[3]
}
}, {
y: 2.14,
color: colors[4],
drilldown: {
name: 'Opera versions',
categories: ['Opera 9.x', 'Opera 10.x', 'Opera 11.x'],
data: [ 0.12, 0.37, 1.65],
color: colors[4]
}
}];
// Build the data arrays
var browserData = [];
var versionsData = [];
for (var i = 0; i < data.length; i++) {
// add browser data
browserData.push({
name: categories[i],
y: data[i].y,
color: data[i].color
});
// add version data
for (var j = 0; j < data[i].drilldown.data.length; j++) {
var brightness = 0.2 - (j / data[i].drilldown.data.length) / 5 ;
versionsData.push({
name: data[i].drilldown.categories[j],
y: data[i].drilldown.data[j],
color: Highcharts.Color(data[i].color).brighten(brightness).get()
});
}
}
// Create the chart
$('#container').highcharts({
chart: {
type: 'pie'
},
title: {
text: 'Browser market share, April, 2011'
},
yAxis: {
title: {
text: 'Total percent market share'
}
},
plotOptions: {
pie: {
shadow: false,
center: ['50%', '50%']
}
},
tooltip: {
valueSuffix: '%'
},
series: [{
name: 'Browsers',
data: browserData,
size: '60%',
dataLabels: {
formatter: function() {
return this.y > 5 ? this.point.name : null;
},
color: 'white',
distance: -30
}
}, {
name: 'Versions',
data: versionsData,
size: '80%',
innerSize: '60%',
dataLabels: {
formatter: function() {
// display only if larger than 1
return this.y > 1 ? '<b>'+ this.point.name +':</b> '+ this.y +'%' : null;
}
}
}]
});
});

Answer 1

To get empty space in the middle of a chart use 'size' and 'innerSize' - Like in your example:
size: '80%',
innerSize: '60%'
Regarding text - I advice to use renderer.text().