Orientation of structures from drill core orientation angles

Calculates the orientation of a plane or line from internal core angles ( alpha, beta, and gamma) of oriented drill cores

Usage

drillcore_orientation(azi, inc, alpha, beta, gamma = NULL)

Arguments

azi: numeric. Azimuth of drill core axis orientation in degrees (measured clockwise from North).
inc: numeric. Inclination of drill core axis in degrees (Note: negative values for downward).
alpha: numeric vector. Alpha angle in degrees
beta: numeric vector. Beta angle in degrees
gamma: numeric. (optional). Gamma angle in degrees

Value

object of class "plane". If gamma is specified, "line" object is returned.

Examples

azi <- 225
inc <- -45
drillcore_orientation(azi, inc, 60, 320)
#> Plane object (n = 1):
#> dip_direction           dip 
#>      25.00392      70.02959 
drillcore_orientation(azi, inc, 45, 220)
#> Plane object (n = 1):
#> dip_direction           dip 
#>     333.24890      34.77544 

# multiple alpha-beta measurements
plot(Line(azi, -inc), lab = "core-axis")

res <- drillcore_orientation(azi, inc, alpha = c(60, 45), beta = c(320, 220))
points(res, col = 2:3)
text(res, labels = c("A", "B"), col = 2:3, pos = 4)