Highcharts drilldown from bar-->pie or bar-->column
问题 I need to create a bar-chart with a pie-chart drill down. Everything works fine in all browsers but Do you need more explanations? function activities(params) { //params coming from statistics controller var title_activities = params['title_activities'], source_activities = params['source_activities'], link_activities = params['link_activities'], credits_databasis_str_activities = params['credits_databasis_str_activities'], activities_category_names = params['activities_category_names'],