Sales Force List of List Object

Remote Action List of List Object

global with sharing class TagLogApp {
    public static List<List<Object>> getChartData() {
        List<List<Object>> data = new List<List<Object>>();
        Object locName;
        String locValue;
      
        List<AggregateResult> locationNames = [select Location__c,COUNT(Name) cnt from Tag_Log__c GROUP BY Location__c ];
        data.add(new List<Object>{'Locations', 'Tag Count'});
        
        for(AggregateResult rd : locationNames) {
            locName = rd.get('Location__c'); 
            locValue = locName  != Null ? (String)locName : 'Others';
            data.add(new List<Object>{locValue , Double.ValueOf(rd.get('cnt'))});           
        }        
        return data;
    }

   @RemoteAction
   public static  List<List<Object>>  GetAll(String searchText)
   {
        return TagLogApp.getChartData();
   }     
}