compare data with one week back data

[kirrusk]

Hello,

I'm trying to compare latest data with seven days back data.

I want to create column charts in dashboard , one chart with today's data , other one with 7 day's back data.

for example , if i select last 15mins from drop down, both panels should display data for same time interval (one panel with today's date and other one with 7 days back date)

is this possible.