repitch {StratigrapheR}

Converts pitch into declination and inclination

Description

Finds the declination and inclination of a line defined by a pitch on a plane

Usage

repitch(pitch, strike, dip, quadrant = NA)

Arguments

pitch

pitch (or rake) of the data; it is the angle between the strike of the plane and a line. It is taken from the left side going downward along the dip, and is positive downward.

strike

strike of the data; it is the angle from the north of the horizontal line of the plane. It is corrected by the dipfix function.

dip

dip of the data; it is the angle from the horizontal taken on the line of the plane perpendicular to the one of the strike. It is corrected by the dipfix function.

quadrant

the quadrant were the plane dips downward. Accepted values are NA, 'N', 'S', 'W' or 'E' (lower- or uppercase alike) for correction by the dipfix function.

Value

a list of declination and inclination of the defined lines

References

Eric Carlson of the Colorado School of Mines is acknowledged for his rake to plunge calculator on which this function is based.

See Also

dipfix, incfix and transphere

Examples

strike <- c(90, 135, 135, 135)
dip    <- c(0,  65,  65,  65)
pitch  <- c(40, 40,  140, -40)

earnet()
earplanes(strike,dip,hsphere = "b", a = list(col = "red", lwd = 2))

res <- repitch(pitch = pitch, strike = strike, dip = dip)

earpoints(dec = res$dec, inc = res$inc)