Flat1dDetector.surface

Flat1dDetector.surface(param)

Return the detector surface point corresponding to param.

For parameter value p, the surface point is given by

surf = p * axis

Parameters:

paramfloat or array-like

Parameter value(s) at which to evaluate.

Returns:

pointnumpy.ndarray

Vector(s) pointing from the origin to the detector surface point at param. If param is a single parameter, the returned array has shape (2,), otherwise param.shape + (2,).

Examples

The method works with a single parameter, resulting in a single vector:

>>> part = odl.uniform_partition(0, 1, 10)
>>> det = Flat1dDetector(part, axis=[1, 0])
>>> det.surface(0)
array([ 0.,  0.])
>>> det.surface(1)
array([ 1.,  0.])

It is also vectorized, i.e., it can be called with multiple parameters at once (or an n-dimensional array of parameters):

>>> det.surface([0, 1])
array([[ 0.,  0.],
       [ 1.,  0.]])
>>> det.surface(np.zeros((4, 5))).shape
(4, 5, 2)