R: Angles for Ternary plot

Bfocvec {RFOC} | R Documentation

## Angles for Ternary plot

### Description

Calculates Angles for determining ternary distribution of faults based on P-T axis orientation.

### Usage

    Bfocvec(Paz, Pdip, Taz, Tdip)

### Arguments

`Paz` | vector of azimuths, degrees
`Pdip` | vector of dips, degrees
`Taz` | vector of azimuths, degrees
`Tdip` | vector of dips, degrees

### Details

This calculation is based on Froelich's paper.

### Value

LIST:

`Bdip` | azimuths, degrees
`Baz` | dips, degrees

### Author(s)

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

### References

C. Frohlich. Triangle diagrams: ternary graphs to display similarity and diversity of earthquake focal mechanisms. Physics of the Earth and Planetary Interiors, 75:193-198, 1992.

### See Also

ternfoc.point

### Examples

    Msdr = CONVERTSDR(55.01, 165.65,  29.2   )
     MEC = MRake(Msdr$M)
      MEC$UP = FALSE
       az1 = Msdr$M$az1
      dip1 = Msdr$M$d1
      az2 = Msdr$M$az2
      dip2 = Msdr$M$d2
      BBB = Bfocvec(az1, dip1,  az2,  dip2)
      V = ternfoc.point(BBB$Bdip, Msdr$M$pd, Msdr$M$td )

[Package RFOC version 3.4-3 Index]