Add Arrows to a Stereoplot

A quiver plot displays displacement vectors into pointing into the direction of movement.

Usage

stereo_arrows(
  x,
  sense,
  scale = 0.1,
  angle = 10,
  length = 0.1,
  upper.hem = NULL,
  earea = NULL,
  ...
)

stereo_hoeppener(
  pole,
  slip,
  scale = 0.1,
  angle = 10,
  length = 0.1,
  upper.hem = NULL,
  earea = NULL,
  ...
)

# S3 method for class 'spherical'
arrows(
  x,
  sense,
  scale = 0.1,
  angle = 10,
  length = 0.1,
  upper.hem = NULL,
  earea = NULL,
  ...
)

Arguments

x

object of class "Vec3", "Line", "Ray", or "Plane", where the rows are the observations and the columns are the coordinates.

sense

numeric. Sense of the line on a fault plane. Either 1or -1 for normal or thrust offset, respectively. The "sense" is the sign of the fault's rake (see Fault_from_rake() for details).

scale

numeric. Scales the length of the vector. 0.1 by default

angle

numeric. Angle from the shaft of the arrow to the edge of the arrow head.

length

numeric. Length of the edges of the arrow head (in inches).

upper.hem

logical. Whether the projection is shown for upper hemisphere (TRUE) or lower hemisphere (FALSE). Defaults to getOption("structr.upper.hem").

earea

logical. Projection, either TRUE for Lambert equal-area projection, or FALSE for meridional stereographic projection. Defaults to getOption("structr.earea").

...

arguments passed to graphics::arrows()

pole, slip

spherical object. The plane normal and a slip vector

See also

hoeppener(), angelier()

Other stereo-plot: fault-plot, lines(), plot-spherical, points.spherical(), stereo_cones, stereo_confidence(), stereo_contour, stereo_lines(), stereo_point(), stereo_segment(), stereoplot(), stereoplot_guides(), stereoplot_ticks(), text.spherical()

Examples

set.seed(20250411)
stereoplot()
p <- rvmf(n = 100)
stereo_arrows(p, sense = 1, col = "red")