HighMaps: Add second data series to tooltip - highcharts

Question

I have a second data series that I would like to add to the tooltip on this Highmaps chart. The variable with the second set of data (data2) is in place, but I haven't added the series yet as each time I do it breaks the code. I would like the tooltip to show the data from the first series and then beneath that, show the data from the second series. So it would read something like:
Value
State name: 4.50
Ranking: 3
I think the second series should be added like this:
{name:'Ranking: ',
data: data2
}
but, like I said, when I add that it breaks the code. Beyond that, I can't figure out how to add that additional data to the tooltip, once I get there.
Here's the javascript code:
// Prepare demo data
// Data is joined to map using value of 'hc-key' property by default.
// See API docs for 'joinBy' for more info on linking data and map.
var data2 = [
['mx-3622', 0],
['mx-bc', 1],
['mx-bs', 2],
['mx-so', 3],
['mx-cl', 4],
['mx-na', 5],
['mx-cm', 6],
['mx-qr', 7],
['mx-mx', 8],
['mx-mo', 9],
['mx-df', 10],
['mx-qt', 11],
['mx-tb', 12],
['mx-cs', 13],
['mx-nl', 14],
['mx-si', 15],
['mx-ch', 16],
['mx-ve', 17],
['mx-za', 18],
['mx-ag', 19],
['mx-ja', 20],
['mx-mi', 21],
['mx-oa', 22],
['mx-pu', 23],
['mx-gr', 24],
['mx-tl', 25],
['mx-tm', 26],
['mx-co', 27],
['mx-yu', 28],
['mx-dg', 29],
['mx-gj', 30],
['mx-sl', 31],
['mx-hg', 32]
];
var data = [
['mx-3622', 0.00],
['mx-bc', 5.59],
['mx-bs', 4.05],
['mx-so', 4.77],
['mx-cl', 6.91],
['mx-na', 8.88],
['mx-cm', 8.01],
['mx-qr', 4.87],
['mx-mx', 5.01],
['mx-mo', 0.089],
['mx-df', 8.12],
['mx-qt', 7.32],
['mx-tb', 3.17],
['mx-cs', 1.15],
['mx-nl', 6.88],
['mx-si', 6.64],
['mx-ch', 2.19],
['mx-ve', 0.66],
['mx-za', 8.03],
['mx-ag', 10],
['mx-ja', 3.35],
['mx-mi', 3.91],
['mx-oa', 0.8],
['mx-pu', 1.53],
['mx-gr', 0.0],
['mx-tl', 2.95],
['mx-tm', 5.47],
['mx-co', 9.46],
['mx-yu', 8.62],
['mx-dg', 4.47],
['mx-gj', 8.33],
['mx-sl', 4.35],
['mx-hg', 4.75]
];
// Create the chart
Highcharts.mapChart('container', {
chart: {
map: 'countries/mx/mx-all'
},
title: {
text: 'Highmaps basic demo'
},
subtitle: {
text: 'Source map: Mexico'
},
mapNavigation: {
enabled: true,
buttonOptions: {
verticalAlign: 'bottom'
}
},
colorAxis: {
min: 0
},
series: [{
data: data,
name: 'Value',
states: {
hover: {
color: '#BADA55'
}
},
}]
});```
Here's a jsfiddle: https://jsfiddle.net/sstoker/81w2revu/15/
Any help would be very much appreciated!!!

Answer 1

You can add the second series in this way:
series: [{
data: data,
name: 'Value',
...
}, {
name: 'Ranking: ',
data: data2
}]
Live demo: https://jsfiddle.net/BlackLabel/amtycfbL/
But I think that a better solution would be to add the additional data field to the first series data and display it in a tooltip by using pointFormat option:
data.forEach(function(el, i) {
el.push(data2[i][1])
});
// Create the chart
Highcharts.mapChart('container', {
...
tooltip: {
pointFormat: 'Value {point.name} Ranking: {point.rank}'
},
series: [{
keys: ['hc-key', 'value', 'rank'],
data: data,
...
}]
});
Live demo: https://jsfiddle.net/BlackLabel/j809rcva/
API Reference: https://api.highcharts.com/highmaps/series.map.keys