Message-ID: <alpine.LNX.2.00.1209281016480.4406@salmo.appl-ecosys.com>
Date: 2012-09-28T17:17:57Z
From: Rich Shepard
Subject: Lattice bwplot(): Conditioning on one factor
In-Reply-To: <10E49A49-EBA9-452D-B394-45B75A20D15B@comcast.net>
On Fri, 28 Sep 2012, David Winsemius wrote:
> bwplot(quant ~ param , data=mg.d, main='Magnesium', ylab='Concentration
> (mg/L)', subset= era=='Pre-mining' )
David, Don:
Thank you. I tried subset= and era== separately, not together.
Now I know.
Much appreciated,
Rich