Message-ID: <5CDEBE48-FED9-4493-AA93-7EF77D4BA99E@mac.com>
Date: 2012-11-23T04:26:12Z
From: Brian Feeny
Subject: What is the . in formula ~. syntax?
I know if I have a dataframe with columns y, x1, x2 and I wish to have y as my y value and x1 and x2 as x values I can do:
y ~ x1 + x2
or
y ~.
but can someone explain what . actually is or what its transposed into?
I searched for this with no success, reading the "formula" manual pages.
Brian