Interactive Operations

The function interactive() simplifies the definition of operations that are automatically updated when an event is triggered. By default the operation is recomputed when the data or the axes of the original signal is changed.

>>> s = hs.signals.Signal1D(np.arange(10.))
>>> ssum = hs.interactive(s.sum, axis=0)
>>> ssum.data
array([45.])
>>> s.data /= 10
>>> s.events.data_changed.trigger(s)
>>> ssum.data
array([4.5])

Interactive operations can be performed in a chain.

>>> s = hs.signals.Signal1D(np.arange(2 * 3 * 4).reshape((2, 3, 4)))
>>> ssum = hs.interactive(s.sum, axis=0)
>>> ssum_mean = hs.interactive(ssum.mean, axis=0)
>>> ssum_mean.data
array([30.,  33.,  36.,  39.])
>>> s.data 
array([[[ 0,  1,  2,  3],
        [ 4,  5,  6,  7],
        [ 8,  9, 10, 11]],

       [[12, 13, 14, 15],
        [16, 17, 18, 19],
        [20, 21, 22, 23]]])
>>> s.data *= 10
>>> s.events.data_changed.trigger(obj=s)
>>> ssum_mean.data
array([300.,  330.,  360.,  390.])