The "select" event fires when you click the legend entries. With most
charts, you can distinguish a legend click from a data click by checking
the "row" property of the selected value: data points will have a row
index, legend entries will have a null row.
google.visualization.events.addListener(chart, 'select', function () {
var selection = chart.getSelection();
if (selection.length) {
if (selection[0].row == null) {
// legend entry was clicked
// selection[0].column is the column for the selected series
}
}
});
Note that if you have multi-select enabled, you will have to loop through
the selection to check every element.
On Wednesday, July 9, 2014 7:39:43 PM UTC-4, Kyle Adams wrote:
>
> I'm trying to make different tables appear when a chart's different legend
> entries are clicked. Is there a way to add an event listener to the legend
> entries to do this? I notice that something happens when I click the legend
> entries, so I guess there must be a listener already, but how do I add my
> own?
>
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