[postgis-users] distance from polygon for a point that is inside

[ricardd at mathstat.dal.ca]

Hello postgis-users,
I recently started using postGIS and I'm really impressed with its
capabilities. Kudos to the developers.

This is probably an easy question for the gurus, so please bear with me.

Is there a way to calculate the minimum distance between a point and the
boundary of a polygon when the point is located inside the polygon? I have
been using distance(polygon, point), but it returns 0 when
contains(polygon, point)=T.

Help appreciated.
Cheers,

Dan