Hi,

Thanks for your reply.

If I understand correctly, I would need the centre point in order to use STBuffer().

I don't currently understand how to find the centre point from the existing shape stored as a CIRCULARSTRING. Here is some example data I am working with:

CIRCULARSTRING (52.6107417597068 -1.19053984363516, 52.6107417597068 -1.19185949047026, 52.6114844449159 -1.19185949047026, 52.6114844449159 -1.19053984363516, 52.6107417597068 -1.19053984363516)

CIRCULARSTRING (0 4, 4 0, 8 4, 4 8, 0 4)

Based on this, is there an easy way to find the centre point?

TIA,

Chris