public static void GroupByCategoryRecursively(Node node)
{
GroupByCategory(node);
foreach (Node subnode in node.Subnodes)
GroupByCategoryRecursively(subnode);
}
public static void GroupByCategory(Node node)
{
var group_by_category = from p in node.Posts
group p by p.Match into g
select new PlotData(g.Key.Name, g.Sum(p => p.Value));
node.Data = new ObservableCollection<PlotData>(group_by_category);
}
