README.md

In lmitchell4/earthquake: Functions for Working with Earthquake Data Set

earthquake

This is an R package for investigating data on significant earthquakes around the world extending back to 2150 B.C. The data set was provided by the National Geophysical Data Center/World Data Service* and is available through the National Oceanic and Atmospheric Administration (NOAA) website.

A description of the data, as stated on the NOAA website, is as follows:

"The Significant Earthquake Database contains information on destructive earthquakes from 2150 B.C. to the present that meet at least one of the following criteria: Moderate damage (approximately $1 million or more), 10 or more deaths, Magnitude 7.5 or greater, Modified Mercalli Intensity X or greater, or the earthquake generated a tsunami."

Installation

The earthquake package can be downloaded from GitHub using the devtools package:

devtools::install_github("lmitchell4/earthquake")

Data

A copy of the entire data set (downloaded October 2017) is provided with the earthquake package in a file called NOAA_earthquakes.txt.

Functions

This package includes functions for reading in and cleaning the data set, and creating timeline and map plots of earthquakes. Here are brief summaries of the primary functions:

library(earthquake) context("Function output")

eq_clean_data - This function reads in and clean the data set that comes with the package.

eq_timeline - This function creates a timeline plot of earthquakes.

eq_map - This function creates an interactive map of earthquake epicenters using the JavaScript leaflet library.

References

*National Geophysical Data Center / World Data Service (NGDC/WDS): Significant Earthquake Database. National Geophysical Data Center, NOAA. doi:10.7289/V5TD9V7K

License

This project is released under GPL-3 License.

lmitchell4/earthquake documentation built on May 29, 2019, 3:42 a.m.