StrikeDip: Plot Strike Dip Lines

In RFOC: Graphics for Spherical Distributions and Earthquake Focal Mechanisms

Plot Strike Dip Lines

Description

Given a focal mechanism, add Strike Dip lines to a plot.

Usage

StrikeDip(x = x, y = y, MEC, focsiz, addDIP = TRUE, ...)

Arguments

x	x-location on plot
y	y-location on plot
MEC	Focal Mechanism list from SDRFOC
focsiz	size of mechanism, inches
addDIP	Logical, TRUE = add dip line perpendicular to strike
...	graphical parameters

Details

This is a summary plot to be used instead of Beach Balls.

Value

Graphical Side Effects

Author(s)

Jonathan M. Lees<[e-mail]>

References

Lees, J. M., Geotouch: Software for Three and Four Dimensional GIS in the Earth Sciences, Computers & Geosciences, 26, 7, 751-761, 2000.

See Also

nipXY, justfocXY, plotmanyfoc

Examples

###  HAiti Earthquake Jan, 2010
MEC <-  SDRfoc(71, 64, 25 , u=FALSE, ALIM=c(-1,-1, +1, +1), PLOT=FALSE)
plot(c(0, 1), c(0,1), type='n', asp=1)
u <- par("usr")
focsiz <-  0.5
justfocXY(MEC, x=.5,  y= .5,  focsiz=0.5,
fcol ='brown' , fcolback = "white", xpd = TRUE)
 StrikeDip(1.0, .5 , MEC  ,focsiz, col="purple", lwd=3 )
nipXY(MEC, x = 0.25, y = .5,  focsiz=0.5,
fcol ='purple', nipcol = "black", cex = 1)


#####  or
set.seed(2015)
N = 20
lon=runif(20, 268.1563 , 305)
lat=runif(20, 7.593004,  25.926045)
str1=runif(20,50,100)
dip1=runif(20,10, 80)
rake1=runif(20,5, 180)

dep=runif(20,1,15)
name=seq(from=1, to=length(lon), by=1)
Elat=NULL
Elon=NULL
yr = rep(2017, times=N)
jd = runif(N, min=1, max=365)

 MEKS = list(lon=lon, lat=lat, str1=str1, dip1=dip1,
rake1=rake1, dep=dep, name=name, yr=yr, jd = jd)

PROJ = GEOmap::setPROJ(type=2, LAT0=mean(lat) , LON0=mean(lon) )   ##   utm

XY = GEOmap::GLOB.XY(lat, lon, PROJ)

plot(range(XY$x), range(XY$y), type='n', asp=1)

for(i in 1:length(XY$x))
{
  Msdr = CONVERTSDR(MEKS$str1[i], MEKS$dip1[i],MEKS$rake1[i])
     MEC = MRake(Msdr$M)
       MEC$UP = FALSE

         jcol =  foc.color(foc.icolor(MEC$rake1), pal=1)


StrikeDip(XY$x[i], XY$y[i] , MEC  ,focsiz, col=jcol, lwd=3 )

}

RFOC documentation built on Sept. 8, 2023, 6:12 p.m.