@theo,
You can toggle the visibility of a dataSeries by setting visible property. Updating visible property programmatically on clicking legend or button should work fine in this case. Please find the code-snippet for toggling dataSeries below.
var button = document.getElementById( "toggleDataSeries" );
button.addEventListener( "click", toggleDataSeries);
function toggleDataSeries(e) {
var data = chart.data;
for(var i = 0; i < data.length; i++) {
chart.options.data[i].visible = !data[i].visible;
}
chart.render();
}
Please take a look at this JSFiddle for a working example with sample code.
—
Shashi Ranjan
Team CanvasJS