[R] from long/lat to UTM

[yyan liu]

Hi:
  Is there any function in R which can convert the
long/lat to UTM(Universal Transverse Mercator)?
  There are quite a few converters on Internet.
However, the interface is designed as input->output
which I can not convert lots of locations at the same
time.
  Another question is whether there is a function in R
which can tell the time zone from the location's
lat/long?
  Thank you!

liu