Reference

All functions
indicatrix()	Compute Tissot indicatrix ellipse geometry
plot(<indicatrix>)	Plot an indicatrix
plot(<indicatrix_list>)	Plot a list of indicatrixes
`[`(<indicatrix_list>)	Subset an indicatrix_list
ti_ellipse()	Generate ellipse coordinates for an indicatrix
tissot()	Compute Tissot indicatrix properties
tissot_get_proj() tissot_set_proj()	Get or set the current plot projection
tissot_map() tissot_abline()	Plot world coastline on a projected map
tissot_unproject()	Unproject coordinates to geographic (lon/lat) CRS
world	World coastline