ternfocgeo: Ternary Focals

In RFOC: Graphics for Spherical Distributions and Earthquake Focal Mechanisms

Ternary Focals

Description

Ternary plots of rake categories (strike-slip, normal, thrust) distributed geographically.

Usage

ternfocgeo(CMTSOL, PROJ = NULL, icut = 5, ndivs = 10,
 bbox=c(0,1, 0, 1), PLOT = TRUE, add = FALSE, RECT = FALSE)

Arguments

CMTSOL	see output of getCMT for list input
PROJ	Map projection
icut	cut off for number of points in box, default=5
ndivs	divisions of map area, default=10
bbox	bounding box for dividing the area, given as minX, maxX, minY, maxY; default=usr coordinates from par()
PLOT	logical, default=TRUE
add	logical, add to existing plot
RECT	logical, TRUE=plot rectangles

Details

Program divides the area into blocks, tests each one for minimum number per block and plots a ternary plot for each block.

Value

Graphical Side Effects

Author(s)

Jonathan M. Lees<[e-mail]>

See Also

PlotTernfoc, spherefocgeo, prepFOCS, RectDense

Examples

N = 100
LATS = c(7.593004,  25.926045)
LONS = c(268.1563 , 305)
lon=rnorm(N, mean=mean(LONS), sd=diff(LONS)/2 )
lat=rnorm(N, mean=mean(LATS), sd=diff(LATS)/2)

str1=runif(N,50,100)
dip1=runif(N,10, 80)
rake1=runif(N,5, 180)


dep=runif(N,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)

##  points(XY$x, XY$y)

ternfocgeo(MEKS , PROJ, PLOT=TRUE, icut = 3,
ndivs = 4, add=TRUE, RECT=TRUE)

points(XY$x, XY$y, pch=8, col="purple" )

#################  next restrict the boxes to a specific region
plot(range(XY$x), range(XY$y), type='n', asp=1)
points(XY$x, XY$y)

ternfocgeo(MEKS , PROJ, PLOT=TRUE, icut = 3, ndivs = 5,
 bbox=c(-2000,2000,-2000,2000) , add=TRUE, RECT=TRUE)


## Not run: 

#####   this example shows a real application with a map
plot(x=range(IZ$x), y=range(IZ$y), type='n', asp=1, axes=FALSE, ann=FALSE)

image(x=IZ$x, y=IZ$y, z=(UZ), col=blues, add=TRUE)

image(x=IZ$x, y=IZ$y, z=(AZ), col=terrain.colors(100) , add=TRUE)


 plotGEOmapXY(haiti.map,
              LIM = c(Lon.range[1],Lat.range[1] ,
Lon.range[2] ,Lat.range[2]),
              PROJ =PROJ, MAPstyle = 2,
MAPcol = 'black' , add=TRUE  )

H = rectPERIM(JMAT$xo, JMAT$yo)


antipolygon(H$x ,H$y,   col=grey(.85)  , corner=1, pct=.4)

sqrTICXY(H , PROJ, side=c(1,2,3,4),   LLgrid=TRUE, col=grey(.7) )

ternfocgeo(OLDCMT, PROJ, PLOT=TRUE, add=TRUE)




## End(Not run)




  

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