T3Variations.from_vector

static t3toolbox.frame_variations_format.T3Variations.from_vector(flat, variation_shapes, stack_shape=())

def from_vector(
        flat,                                       # shape=(size,)
        variation_shapes,                           # (tucker_variation_shapes, tt_variation_shapes)
        stack_shape:    typ.Tuple[int, ...] = (),   # full leading stack K + C
) -> 'T3Variations':

Inverse of to_vector(): rebuild variations of the given structure from a 1D vector.

variation_shapes = (tucker_variation_shapes, tt_variation_shapes) (e.g. a frame’s T3Frame.variation_shapes); stack_shape is the full leading stack K + C.

Parameters:

stack_shape (t3toolbox.backend.common.typ.Tuple[int, Ellipsis])

Return type:

T3Variations