Plot a Focal Mechanism from SDR

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Description

Given Strike-Dip-Rake plot a focal mechanism

Usage

1
SDRfoc(s, d, r, u = FALSE, ALIM = c(-1, -1, +1, +1), PLOT = TRUE)

Arguments

s

strike, degrees

d

dip, degrees

r

rake, degrees

u

logical, TRUE=upper hemisphere

ALIM

bounding box on plot

PLOT

logical, TRUE=add to plot

Details

The ALIM vector allows one to zoom into portions of the focal mechanism for details when points are tightly clustered.

Value

MEC structure

Note

Basic MEC List Structure

az1 azimuth angle plane 1, degrees
dip1 dip angle plane 1, degrees
az2 azimuth angle plane 2, degrees
dip2 dip angle plane 2, degrees
dir 0,1 to determine which section of focal sphere is shaded
rake1 rake angle plane 1, degrees
dipaz1 dip azimuth angle plane 1, degrees
rake2 rake angle plane 2, degrees
dipaz2 dip azimuth angle plane 2, degrees
P pole list(az, dip) P-axis
T pole list(az, dip) T-axis
U pole list(az, dip) U-axis
V pole list(az, dip) V-axis
F pole list(az, dip) F-axis
G pole list(az, dip) G-axis
sense 0,1 to determine which section of focal sphere is shaded
M list of focal parameters used in some calculations
UP logical, TRUE=upper hemisphere
icol index to suite of colors for focal mechanism
ileg Kind of fault
fcol color of focal mechanism
CNVRG Character, note on convergence of solution
LIM vector plotting region (x1, y1, x2, y2)

Author(s)

Jonathan M. Lees <jonathan.lees@unc.edu>

See Also

CONVERTSDR

Examples

1
M = SDRfoc(-25, 34, 16,u = FALSE, ALIM = c(-1, -1, +1, +1), PLOT=TRUE)

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