Are earthworms more attracted to perfume or vinegar?

earthworms are attracted more towards vinegar...
because it has acetic acid ( CH3COOH) that has strong anti bacterial properties so insects are attracted more towards it but they are also affected by it the most..

Are you asking about a street map usage  if so here is your answer  a street map for a very limited area could simply be a bit map or a .jpg image.  but a more general map would probably store the streets as vectors.  but you shouldn't assume that there is one way to do it