Message-ID: <alpine.LNX.2.00.1110241511260.30827@salmo.appl-ecosys.com>
Date: 2011-10-24T22:14:33Z
From: Rich Shepard
Subject: Syntax Help for xyplot()
In-Reply-To: <1319493486887-3934721.post@n4.nabble.com>
On Mon, 24 Oct 2011, B77S wrote:
> Why not format the data like this:
> site sampledate SO4 TDS NA Mg Cond Cl Ca
Because I don't know how to reformat the base data frame (chemdata) to
achieve this.
> It seems to me that you summary doesn't make any sense. Those quantiles
> are meaningless as they encompass all the parameters. Am I missing
> something?
One site/sampdate/param has one value associated with it.
>> 82 BC-0.5 1996-06-02 SO4 194.00
>> 83 BC-0.5 1996-06-02 TDS 530.00
>> 6903 BC-2 1994-07-25 Cond 826.00
>> 6905 BC-4 1996-08-23 SO4 36.00
>> 6977 BC-2 1994-10-19 Cond 848.00
>> 6980 BC-2 1995-03-16 Cond 1795.00
>> 6983 BC-2 1995-06-21 Cond 640.00
>> 7833 BC-3 1994-01-20 Cond 406.00
>> 7838 BC-3 1994-02-17 Cond 401.00
>> 7847 BC-3 1994-03-24 Cond 441.00
>> 7854 BC-3 1994-06-13 Cond 400.00
>> 7866 BC-3 1994-07-25 Cond 393.00
>> 7871 BC-3 1994-08-18 Cond 420.00
>> 7877 BC-3 1994-10-20 Cond 438.00
I acknowledge that if the chemicals ('param') were in a vector, their associated
concentrations ('quant') in another vector following it, and both associated
with a site and sampdate life would be much better.
Thanks,
Rich