Disable Markers For A Line

// Set markers enabled to false for a series
function setMarker(array, enabledFlag) {
for ( var i = 0; i < array.length; i++) {
array[i].marker.enabled = false;
}

}

widget.on('render', function(sender,se){

// edit index of series to select the series you want to turn off markers for
var series = 1;

setMarker(sender.queryResult.series[series].data, false);
})