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takes azimuth and dip and projects the greaat circle on the focla sphere
lowplane(az, dip, col = par("col"), UP = FALSE, PLOT = TRUE)
degrees, azimuth of strike of plane
degrees, dip
color of plane
upper/lower hemisphere
add to plot
list of x,y coordinates of plane
Here azimuth is measured from North, and represents the actual strike of the fault line.
net
# NOT RUN { net() lowplane(65,23) # }
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