Stereoplot Gridlines — stereoplot_guides • structr

Adds equal-area or equal-angle projection gridlines to an existing stereoplot.

Usage

stereoplot_guides(d = 10, earea = TRUE, radius = 1, center = NULL, ...)

Arguments

d: angle between grid lines
earea: logical. Projection, either TRUE for Lambert equal-area projection (the default), or FALSE for meridional stereographic projection.
radius: numeric. Radius of circle
center: Center position of gridlines. If NULL (the default), gridlines are centered on the origin of the stereoplot. Otherwise, this should is an spherical object.
...: optional arguments passed to graphics::lines()

See also

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

Examples

plot(c(-1, 1), c(-1, 1), type = "n", asp = 1)
stereoplot_guides(d = 5, earea = FALSE, col = "green", rotation = 20)


plot(c(-1, 1), c(-1, 1), type = "n", asp = 1)
stereoplot_guides(d = 15, earea = TRUE, col = "orange", rotation = 90)


plot(c(-1, 1), c(-1, 1), type = "n", asp = 1)
stereoplot_guides(d = 15, earea = FALSE, center = Line(120, 50))