When a user has logged in Opal, he/she has a profile representing its activity. The user can be defined in the Opal internal user registry, or in an external realm.
Examples
if (FALSE) { # \dontrun{
o <- opal.login('administrator','password', url='https://opal-demo.obiba.org')
oadmin.user_profiles(o)
opal.logout(o)
} # }