Has X dimension?

hasX({tbox, stbox}): bool

SELECT hasX(tbox 'TBOX((, 2000-01-01), (, 2000-01-03))');
-- false
SELECT hasX(stbox 'STBOX((1.0, 2.0), (3.0, 4.0))');
-- true
				

Has Z dimension?

hasZ(stbox): bool

SELECT hasZ(stbox 'STBOX((1.0, 2.0), (3.0, 4.0))');
-- false
				

Has T dimension?

hasT({tbox, stbox}): bool

SELECT hasT(tbox 'TBOX((1.0, 2000-01-01), (3.0, 2000-01-03))');
-- true
SELECT hasT(stbox 'STBOX((1.0, 2.0), (3.0, 4.0))');
-- false
				

Get the minimum X value

Xmin({tbox, stbox}): float

SELECT Xmin(tbox 'TBOX((1.0, 2000-01-01), (3.0, 2000-01-03))');
-- 1
SELECT Xmin(stbox 'STBOX((1.0, 2.0), (3.0, 4.0))');
-- 1
				

Get the maximum X value

Xmax({tbox, stbox}): float

SELECT Xmax(tbox 'TBOX((1.0, 2000-01-01), (3.0, 2000-01-03))');
-- 3
SELECT Xmax(stbox 'STBOX((1.0, 2.0), (3.0, 4.0))');
-- 3
				

Get the minimum Y value

Ymin(stbox): float

SELECT Ymin(stbox 'STBOX((1.0, 2.0), (3.0, 4.0))');
-- 2
				

Get the maximum Y value

Ymax(stbox): float

SELECT Ymax(stbox 'STBOX((1.0, 2.0), (3.0, 4.0))');
-- 4
				

Get the minimum Z value

Zmin(stbox): float

SELECT Zmin(stbox 'STBOX Z((1.0, 2.0, 3.0), (4.0, 5.0, 6.0))');
-- 3
				

Get the maximum Z value

Zmax(stbox): float

SELECT Zmax(stbox 'STBOX Z((1.0, 2.0, 3.0), (4.0, 5.0, 6.0))');
-- 6
				

Get the minimum timestamp

Tmin({tbox, stbox}): timestamptz

SELECT Tmin(stbox 'GEODSTBOX T(( , , 2001-01-01), ( , , 2001-01-03))');
-- "2001-01-01"
				

Get the maximum timestamp

Tmax({tbox, stbox}): timestamptz

SELECT Tmax(stbox 'GEODSTBOX T(( , , 2001-01-01), ( , , 2001-01-03))');
-- "2001-01-03"