Stereographic projection of lines and planes

Visualization of lines, planes in a stereographic projection.

Usage

stereo_point(
  x,
  col = 1,
  pch = 20,
  lab = NULL,
  text.pos = 4,
  cex = 1,
  upper.hem = FALSE,
  earea = TRUE,
  ...
)

x: Object of class "line" or "plane"
col: color
pch: plotting character
lab: character. text labels
text.pos: position for labels
cex: character expansion of labels
upper.hem: logical. Whether the projection is shown for upper hemisphere (TRUE) or lower hemisphere (FALSE, the default).
earea: logical TRUE for Lambert equal-area projection (also "Schmidt net"; the default), or FALSE for meridional stereographic projection (also "Wulff net" or "Stereonet").
...: optional graphical parameters

"plane" and "fault" objects will be displayed as pole to the plane (only).

stereoplot()
stereo_point(Line(azimuth = c(90, 80), plunge = c(10, 75)), lab = c("L1", "L2"))
stereo_point(Plane(120, 30), lab = "P", col = "red")