Hello: I am using map_2points to define the angular distance and azimuth angle between 2 points. How do I use the results of map_2points to plot arrow vectors where the length of the arrow is the distance between the 2 points and the orientation of the vector is determined by the arrow pointing from the 1st point to the 2nd point. Each point are defined by its latitude and its longitude. If such a mapping subroutine does not exist, do I use the results of map_2points to calculate the zonal and meridional components of the vector then? Thanks. Laura