GeomFields              Arrows depicting a vector field
StatFields              Stat method for geom_fields
angle_correction        Calculate correction for angle in the plot
                        coordinate system
annotation_fields       Annotate a ggplot with vector fields
draw_key_fields         Key glyphs for 'radius' legends
pythagoras              A helper function to calculate vector lengths
scale_radius_continuous
                        Vector field radius scales
seawatervelocity        A small subset of the global ocean physics
                        analysis and forecast product
