DataGrid based Matrix Component

Advanced datagrid for Matrix contains variable no of column and variable no of rows. 
Ex: if we are fetching data from backend in a datagrid such that years are placed in columns and locations are placed  in rows. User may select in any combination of years and locations for display in the datagrid with this component.


Here is a page, that shows an sample implementation of this component for demonstrating the basic functionality
http://www.flexer.info/2008/06/30/matrixgrid-component-extending-the-datagrid/