Greg Stark <gsstark(at)mit(dot)edu> writes:
> Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
>> point[0] and point[1]. Not sure if this is adequately documented.
> Thank you very much.
> It may also be that I just don't have the right book. The book I have seems to
> be more of a tutorial than a reference. Is there a recommended reference book
> for postgres?
Book? Save a tree, use the online manuals ;-). I find this particular
item documented at the bottom of
http://www.ca.postgresql.org/users-lounge/docs/7.3/postgres/functions-geometry.html
regards, tom lane