Message-ID: <alpine.LNX.2.00.1110271145550.30779@salmo.appl-ecosys.com>
Date: 2011-10-27T18:48:58Z
From: Rich Shepard
Subject: Syntax Check: rshape2 melt()
In-Reply-To: <941871A13165C2418EC144ACB212BDB0021814CE@dshsmxoly1504g.dshs.wa.lcl>
On Thu, 27 Oct 2011, Nordlund, Dan (DSHS/RDA) wrote:
> What I think you want is as simple as
> test.melted <- melt(test)
Dan, et al.:
No, it's not that simple. Unfortunately. I've tried various combinations
of id.vars, measure.vars, and variable, but just cannot get the dates to
display in the melted data frame. For example,
m.tds.anal <- melt(tds.anal, id.vars = c('site', 'param'), measure.vars =
'sampdate', variable.name = 'variable', na.rm = T, value.name = 'quant')
> head(m.tds.anal)
site param variable quant
1 UDS-O TDS sampdate 13488
2 STC-FS Cond sampdate 9661
3 UDS-O Mg sampdate 13790
4 UDS-O SO4 sampdate 13790
5 JCM-10B Ca sampdate 13685
6 JCM-10B Cl sampdate 13685
No matter where I put 'sampdate' it displays as that string rather than as
the date itself.
Rich