One of my colleagues is trying to create an index on a column operated on with a PL/pgsql function that we have that uses various pgsphere types and operators and received this error....

> create index xgeom_s_region on sometable ((xgeom_intext(s_region)))
ERROR: could not identify a comparison function for type strans

Should pgsphere provide a comparison function for strans objects? Does that even make sense?

In the meantime, if anyone has even a quick and dirty solution or advice to help my colleague get beyond this error, please reply.