This my answer I need to talk about same point and make it 300 world.
Q) How do Lynch differ in terms of describing the city interms of urban systems (imageable cities vs. spatial composites etc.)
A) The image of the city, including spatial identity, spatial structure and spatial meaning is the product both of immediate sensation and of the memory of past experience which the cityscape can be read. Lynch elaborates five elements: paths, edges, districts, nodes and landmarks to form the urban system.