[R] Bootstrap w/ Clustered Data

[Peter Muhlberger]

Are there any functions in R for running bootstraps with clustered (as
opposed to stratified) data?  I can't seem to find anything obvious in boot
or Bootstrap, though I imagine boot can be manipulated to resample from
clusters.  Is that what people use?

I do see some cluster bootstrap resampling in glsD, but I need
non-parameteric resampling & the capacity to run a sem model.

Thanks in advance,

Peter