we are displaying x-axis into different ranges based on daterangeoption(4 hours, 8 hours, 12 hours, 24 hours,48 hours) for 8 Hours x-axis displays 00:00, 01:00, 02:00, 03:00, 04:00, 05:00, 06:00, 07:00 and all 1/2 hour ranges displays empty. eg: start date : 05/03/2010 05:37 then enddate is 05/03/2010 13:37, it will displays above 8 ranges for 4 Hours displays 8 1/2 hour ranges 00:00, 00:30, 1:00, 1:30, 2:00, 2:30, 3:00, 3:30 we are able display x-axis as per requirement, but only one value is displaying in that range (i.e latest value in the range), it is grouping the range and displaying last value, but i want to display all the values in that range. 6th range contains data 30,35, 7th Range contains 35 and last 1/2 hour contains 35,40 but each range showing latest value in that range i.e 35,35,40 Thanks in advance