hi all ,
i want to create visual which show number of user login based on start or end time in say 30 minute bucket
for example if one user login 10 and logout 10.30
so graph whould show
10-10.30 1
10.30 - 10.45 0
something like this ..
this is my sample data .
dilip,1,2017/09/17 10:00:00,2017/09/17 12:22:00
d2,2,2017/09/17 10:00:00,2017/09/17 11:22:00
d3,3,2017/09/17 10:15:00,2017/09/17 11:22:00
d31,4,2017/09/17 10:20:00,2017/09/17 12:00:00
d4,5,2017/09/17 10:12:00,2017/09/17 10:40:00
d5,6,2017/09/17 11:00:00,2017/09/17 11:32:00
d6,7,2017/09/17 12:25:00,2017/09/17 13:22:00
d7,8,2017/09/17 12:20:00,2017/09/17 13:22:00
d8,9,2017/09/17 13:00:00,2017/09/17 13:22:00
d9,10,2017/09/17 14:00:00,2017/09/17 14:22:00
d10,11,2017/09/17 13:00:00,2017/09/17 13:22:00
d11,12,2017/09/17 13:00:00,2017/09/17 13:22:00
d12,13,2017/09/17 11:00:00,2017/09/17 12:22:00
d13,14,2017/09/17 12:00:00,2017/09/17 13:22:00
d14,15,2017/09/17 15:00:00,2017/09/17 16:22:00
d15,16,2017/09/17 17:00:00,2017/09/17 18:22:00
d16,17,2017/09/17 18:00:00,2017/09/17 19:22:00
any help or suggestion
thanks .