Skip to contents

Stereographic and Equal-Area Projection

Source: R/stereonet_base.R
stereo_coords.Rd

Transformation of spherical coordinates into the stereographic or equal-area projection

Usage

stereo_coords(az, inc, upper.hem = NULL, earea = NULL, radius = 1, fix = TRUE)

Arguments

az, inc

numeric vectors. Azimuth and Inclination in degrees.

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").

radius

numeric. Radius of circle. Defaults to getOption("structr.radius").

fix

logical. Whether coordinates should always plot in one hemisphere?

Value

two-column vector with the transformed coordinates

See also

structr-options

Examples

stereo_coords(90, 10)
#>            x            y
#> inc 0.909039 5.566258e-17
stereo_coords(90, 10, earea = TRUE, upper.hem = TRUE)
#>             x             y
#> inc -0.909039 -1.669877e-16