RSEIS (version 2.1-6)

distaz: Distance-Azimuth from event source to receiver station

Description

Calculates the distance in km, degrees and the azimuth and back azimuth from station to source

Usage

distaz(olat, olon, tlat, tlon)

Arguments

olat

Source (origin) latitude

olon

Source (origin) longitude

tlat

Station (receiver) latitude

tlon

Station (receiver) longitude

Value

• del
  Delta (degrees)
• az
  azimuth, degrees
• baz
  back-azimuth, degrees
• dist
  distance, km
• err
  error flag, 0=failure, 1=success

See Also

GreatDist

Examples

london = c(51.53333, -0.08333333)
     santiago = c(-33.46667, -70.75)

     distaz(london[2], london[1], santiago[2], santiago[1])