geochart regions clickable urls - google-maps

Question

We want to embed a really basic interactive map on our website, where clicking a region will take you to a specific page on our site. We would like to use the regions in google geochart
This is the map we are working with
https://jsfiddle.net/tyvnfxf4/
google.charts.load('current', {'packages':['geochart']});
google.charts.setOnLoadCallback(drawRegionsMap);
function drawRegionsMap() {
var data = google.visualization.arrayToDataTable([
['Country', 'Popularity'],
['England', 400],
['Wales', 300],
['Scotland', 400],
['Ireland', 600],
]);
var options = {
region: 'GB',
resolution: 'provinces',
};
var chart = new google.visualization.GeoChart(document.getElementById('regions_div'));
chart.draw(data, options);
}
And we would want:
Wales to link to www.example.com/wales
Ireland to link to www.example.com/ireland
etc
Can any help?
Many thanks

Answer 1

there are a number of ways to handle, but the key is using the 'select' event
keep in mind, the 'select' event is fired both when something is selected and de-selected,
so make sure length > 0
recommend using a column in the DataTable to store the URLs
use a DataView to hide the column from the chart
then get the URL based on the chart selection
see following working snippet...
google.charts.load('current', {
callback: function () {
var data = google.visualization.arrayToDataTable([
['Country', 'Popularity', 'Domain'],
['England', 400, 'www.example.com/England'],
['Wales', 300, 'www.example.com/Wales'],
['Scotland', 400, 'www.example.com/Scotland'],
['Ireland', 600, 'www.example.com/Ireland'],
]);
var view = new google.visualization.DataView(data);
view.setColumns([0, 1]);
var options = {
region: 'GB',
resolution: 'provinces'
};
var chart = new google.visualization.GeoChart(document.getElementById('regions_div'));
google.visualization.events.addListener(chart, 'select', function () {
var selection = chart.getSelection();
if (selection.length > 0) {
console.log(data.getValue(selection[0].row, 2));
//window.open('http://' + data.getValue(selection[0].row, 2), '_blank');
}
});
chart.draw(view, options);
},
packages:['geochart']
});
<script src="https://www.gstatic.com/charts/loader.js"></script>
<script src="https://www.google.com/jsapi"></script>
<div id="regions_div" style="width: 600px; height: 500px;"></div>