[R] converting a string to an element in a function call

[Thomas Lumley]

On Wed, 21 Jun 2000, Adrian Vance Custer wrote:

> Hello everyone,
> 

> The issue is that I pass a vector of strings to the function and want to use it
> as:
> 
> update(.~.+ do.something.to.the.string(vector.argument.of.strings[i])
> or in the code below
> update(.~.+unknown(facvec[i]))

There's probably a way to do this more directly, but you can use
substitute() to update the formula.

update(model,substitute(.~.+new,list(new=as.name(facvec[i]))))


	-thomas

Thomas Lumley
Assistant Professor, Biostatistics
University of Washington, Seattle


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