Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Similarity between the meridional preference and orientation preference maps: For a single node the orientation preference is assigned to the y-coordinate where as the meridional preference is assigned the x-coordinate, so as to give the location of a point.
