Daily/weekly/Monthly Active Users

Hello,

Is there a plugin or another way to have on the same graph (for a given website) :

  • Daily active users (D-1)
  • Weekly active users (D-7)
  • Monthly active users (D-30)

Maybe it can be done from the piwik_archive_numeric tables ?
Where can I find the correspondance for the period column in the piwik_archive_numeric tables ?

Thanks
Patrick