I'd like to keep all observations for y1... >> >> I'm trying to plot connected time series of two variables in a >> lattice plot: >> xyplot(y1 + y2 ~ t, data=size, type="b") >> >> y2 has missing data for some of the observations and some points are >> therefore not connected. It would make theoretical sense to connect >> the points - is there a way of doing that? > > Can't you just use: > > xyplot(y1 + y2 ~ t, data=size, subset = !is.na(y2) ) > > >> Thanks, >> Allan > > David Winsemius, MD > Heritage Laboratories > West Hartford, CT > >
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