Syntax Check: rshape2 melt()

You should be able to get what you want using the dcast function (I think).

test.melted <- melt(tds.anal)
dcast(test.melted, site + sampdate ~ param)

Dan,

   I don't think the data frame melted properly. I tried the dcast() but
sampdate is not found:

c.tds.anal <- dcast(m.tds.anal, site + sampdate ~ param)
Error in eval(expr, envir, enclos) : object 'sampdate' not found

   Perhaps I still need to better understand the parameters in the melt()
function.

Rich