nlop.Constant

class bartorch.nlop.Constant

Bases: NonlinearOperator

An operator of no inputs that returns value. BART’s nlop_const.

Combined with another operator and linked into one of its inputs, this is how a model’s fixed quantity – a sampling pattern, an echo time – is pinned; partial() does exactly that in one step. BART copies the tensor, so the one passed in is free afterwards.

Also has the methods and properties of NonlinearOperator.