identity_stf¶

Graph.identity_stf()¶

Create an Stf representing the identity function, f(t) = t.

Returns: An Stf representing the identity function.
Return type: Stf

See also

constant_stf(): Create a batch of constant Stfs.
discretize_stf(): Discretize an Stf into a Pwc.
sample_stf(): Sample an Stf at given times.

Notes

For more information on Stf nodes see the Working with time-dependent functions in Boulder Opal topic.

Examples

Create Gaussian pulse.

>>> time = graph.identity_stf()
>>> time
<Stf: operation_name="identity_stf", value_shape=(), batch_shape=()>
>>> gaussian = graph.exp(- time ** 2)
>>> gaussian
<Stf: operation_name="exp", value_shape=(), batch_shape=()>

Refer to the How to perform model-based optimization with user-defined basis functions user guide to find the example in context.