R: Dynamic 3D Plot of Earthquake Hypocentres

threeD {ssEDA}

R Documentation

Dynamic 3D Plot of Earthquake Hypocentres

Description

Dynamic three dimensional plot of earthquake hypocentres (longitude, latitude and depth) locations.

Usage

threeD(events)

Arguments

events defines the events to be plotted. It is an object of class "subset", generally created by subsetcircle, subsetpolygon, subsetrect or subsetsphere.

Installing the rggobi Package

This function uses the ggobi R function to display the data and provide a dynamical graphics interface. The ggobi function is contained in the rggobi package, which is available from CRAN (http://www.r-project.org).

The rggobi package in turn uses the ggobi system software, which is external to R. The ggobi system software can be downloaded from http://www.ggobi.org. Installation instructions are included on that site.

One needs to install the same version of the rggobi package as that of the ggobi system software. Older versions of rggobi can be found by clicking on “Archive” at the bottom of the contributed packages page on CRAN.

Examples

#    This example requires the NZ catalogue

require(ssNZ)

#   Make the Wellington Catalogue
as.catalogue(subsetrect(NZ, minlat=-42.2, maxlat=-40.5,
             minlong=173.6, maxlong=176.0, minday=julian(1,1,1978)),
             catname="Wellington")

#   Cape Palliser Sequence
b <- subsetcircle(Wellington, centrelong=175.5, centrelat=-41.65,
                   maxradius=20, minday=julian(1,1,1990),
                   maxday=julian(1,1,1993), maxdepth=40)

threeD(b)