TODO Restrict to (the complement of) a set of values

atValues(tcbuffer,values) → tcbuffer

minusValues(tcbuffer,values) → tcbuffer

SELECT atValues(tcbuffer '[Cbuffer(Point(2 2), 0.3)@2001-01-01, 
  Cbuffer(Point(2 2), 0.7)@2001-01-03]', 'Cbuffer(Point(2 2), 0.5)');
-- {[Cbuffer(Point(2 2),0.5)@2001-01-02]}
SELECT minusValues(tcbuffer '[Cbuffer(Point(2 2), 0.3)@2001-01-01, 
  Cbuffer(Point(2 2), 0.7)@2001-01-03]', 'Cbuffer(Point(2 2), 0.5)');
/* {[Cbuffer(Point(2 2),0.3)@2001-01-01, Cbuffer(Point(2 2),0.5)@2001-01-02),
   (Cbuffer(Point(2 2),0.5)@2001-01-02, Cbuffer(Point(2 2),0.7)@2001-01-03]} */

TODO Restrict to (the complement of) a geometry

atGeometry(tcbuffer,geometry) → tcbuffer

minusGeometry(tcbuffer,geometry) → tcbuffer

SELECT atGeometry(tcbuffer '[Cbuffer(Point(2 2), 0.3)@2001-01-01, 
  Cbuffer(Point(2 2), 0.7)@2001-01-03]',
  'Polygon((40 40,40 50,50 50,50 40,40 40))');
SELECT minusGeometry(tcbuffer '[Cbuffer(Point(2 2), 0.3)@2001-01-01, 
  Cbuffer(Point(2 2), 0.7)@2001-01-03]',
  'Polygon((40 40,40 50,50 50,50 40,40 40))');
/* {(Cbuffer(Point(2 2),0.342593)@2001-01-01 05:06:40.364673+01,
   Cbuffer(Point(2 2),0.7)@2001-01-03 00:00:00+01]} */