[postgis-devel] Distance operator in presence of M

[Sandro Santilli]

On Thu, Jun 04, 2015 at 05:13:04AM -0700, Paul Ramsey wrote:
> I certainly wouldn’t cry if <<->> only did 2- or 3-d distance and skipped the fourth d-. It’s ugly code anyways, and like you say, it doesn’t have a great deal of meaning, since the 4th dimension isn’t in the same space as the first 3

Would you cry if it did distance at closest-point-of-approach in presence
of M in both operands ? At least it'd be a meaningful one, even if not
necessarely what the user (who can always drop the M from an operand) want.

--strk;