IC

IC#

class pinnx.icbc.IC(func, on_initial=<function IC.<lambda>>)[source]#

Initial conditions: y([x, t0]) = func([x, t0]).

Parameters:

func (Union[Callable[[Dict, ...], Dict], Callable[[Dict], Dict]]) –
Function that returns the initial conditions. This function should take a dictionary of collocation points and return a dictionary of initial conditions. For example:
```
import brainunit as u
def func(x):
    return {'y': -u.math.sin(np.pi * x['x'] / u.meter) * u.meter / u.second}
```
on_initial (Callable[[Dict, array], array]) –
Filter function for initial conditions. This function should take a dictionary of collocation points and return a boolean array indicating whether the points are initial conditions. For example:
```
def on_initial(x, on):
    return on
```

collocation_points(X)[source]#

Return the collocation points for initial conditions.

error(inputs, outputs, **kwargs)[source]#

Error for initial conditions.

Compare the initial conditions with the outputs.

Parameters:

Return type:

Dict[str, Union[Array, ndarray, bool, number, bool, int, float, complex, Quantity]]

Returns:

Error for initial conditions.

Filter the collocation points for initial conditions.