Shift and/or the value span of a temporal number by one or two numbers

shiftValue(tnumber,base) → tnumber

scaleValue(tnumber,width) → tnumber

shiftScaleValue(tnumber,base,base) → tnumber

For scaling, if the value span of the temporal value is a single value (for example, for a temporal instant), the result is the temporal value. Furthermore, the given width must be strictly greater than zero.

SELECT shiftValue(tint '{1@2001-01-01, 2@2001-01-03, 1@2001-01-05}', 1);
-- {2@2001-01-02, 3@2001-01-04, 2@2001-01-06}
SELECT shiftValue(tfloat '{[1@2001-01-01,2@2001-01-02],[3@2001-01-03,4@2001-01-04]}', -1);
--  {[0@2001-01-01, 1@2001-01-02], [2@2001-01-03, 3@2001-01-04]}
SELECT scaleValue(tint '1@2001-01-01', 1);
-- 1@2001-01-01
SELECT scaleValue(tfloat '{[1@2001-01-01,2@2001-01-02], [3@2001-01-03,4@2001-01-04]}', 6);
-- {[1@2001-01-01, 3@2001-01-03], [5@2001-01-05, 7@2001-01-07]}
SELECT scaleValue(tint '1@2001-01-01', -1);
-- ERROR:   The value must be strictly positive: -1
SELECT shiftScaleValue(tint '1@2001-01-01', 1, 1);
-- 2@2001-01-01
SELECT shiftScaleValue(tfloat '{[1@2001-01-01,2@2001-01-02],[3@2001-01-03,4@2001-01-04]}',
  -1, 6);
--  {[0@2001-01-01, 2@2001-01-02], [4@2001-01-03, 6@2001-01-04]}

Extract from a temporal float with linear interpolation the subsequences where the values stay within a span of a given width for at least a given duration

stops(tfloat,maxDist=0.0,minDuration='0 minutes') → tfloat

If maxDist is not given, a value 0.0 is assumed by default and thus, the function extracts the constant segments of the temporal float.

SELECT stops(tfloat '[1@2001-01-01, 1@2001-01-02, 2@2001-01-03]');
-- {[1@2001-01-01, 1@2001-01-02)}
SELECT stops(tfloat '[1@2001-01-01, 1@2001-01-02, 2@2001-01-03]', 0.0, '2 days');
-- NULL