Oops, I realized there may be some issues with using a persistent dataView
object, so here is the revised listener:
/* assumes:
* chart is the visualization chart object
* options is an object with option settings to draw the chart with
* data is the dataTable object
* hideCols is an array of columns that should be hidden (can start
empty)
* this event listener detects clicks on the legend and redraws the chart
with the
* clicked-on column hidden
*/
google.visualization.events.addListener(chart, 'select', function () {
// if row is undefined, we clicked on the legend
if (typeof chart.getSelection()[0]["row"] === 'undefined') {
hideCols.push(chart.getSelection()[0]["column"]);
var view = new google.visualization.DataView(data);
view.hideColumns(hideCols);
chart.draw(view, options);
}
});
--
You received this message because you are subscribed to the Google Groups
"Google Visualization API" group.
To view this discussion on the web visit
https://groups.google.com/d/msg/google-visualization-api/-/6N96av5rdP0J.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/google-visualization-api?hl=en.
