>>> from indicators import *
>>> from moving import TimeInterval,Trajectory

>>> indic1 = TemporalIndicator('bla', [0,3,-4], TimeInterval(4,6))
>>> indic1.empty()
False
>>> indic1.valueAtInstant(5)
3
>>> indic1.valueAtInstant(3)
>>> indic1[1]
3
>>> indic1[5]
>>> [v for v in indic1]
[0, 3, -4]
>>> indic1 = TemporalIndicator('bla', {2:0,4:3,5:-5})
>>> indic1.valueAtInstant(4)
3
>>> indic1.valueAtInstant(3)
>>> indic1[2]
-5

>>> t1 = Trajectory([[0.5,1.5,2.5],[0.5,3.5,6.5]])
>>> indicatorMap([1,2,3], t1, 1)
{(1.0, 3.0): 2.0, (2.0, 6.0): 3.0, (0.0, 0.0): 1.0}
>>> indicatorMap([1,2,3], t1, 4)
{(0.0, 1.0): 3.0, (0.0, 0.0): 1.5}
