Helper functions to create a dummy grid for small circles, great circles, and loxodromes of an Euler pole
smallcircle_dummy(n)greatcircle_dummy(n)
loxodrome_dummy(n, angle, cw)
data.frame
Number of curves
Direction of loxodromes (in degree)
logical. Sense of loxodromes: TRUE
for clockwise
loxodromes (right-lateral displaced plate boundaries). FALSE
for
counterclockwise loxodromes (left-lateral displaced plate boundaries).