[S] How do you create a formula for a model with a large number of variables?

[Adrian Baddeley <adrian@maths.uwa.edu.au>]

        > How do you create a formula for a model 
        > with a large number of variables?

names <- paste("x", 1:25, sep="")
rhs <- paste(names, collapse=" + ")
fmla <- as.formula(paste("y ~ ", rhs))

fmla

y ~ x1 + x2 + x3 + x4 + x5 + x6 + x7 + x8 + x9 + x10 + x11 + x12 + x13 + x14 + 
        x15 + x16 + x17 + x18 + x19 + x20 + x21 + x22 + x23 + x24 + x25



----
Prof Adrian Baddeley, Mathematics & Statistics, University of Western Australia
                <http://maths.uwa.edu.au/~adrian/>
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