earthquakes: Earthquakes on Earth between October 2004 and April 2020

In HDiR: Directional Highest Density Regions

Earthquakes on Earth between October 2004 and April 2020

Description

Geographical coordinates (latitude and longitude) of earthquakes of magnitude greater than or equal to 2.5 degrees.

Usage

data("earthquakes")

Format

A data frame with 272 observations on the following 2 variables:

Latitude

A numeric vector containing the latitude coordinates.

Longitude

A numeric vector containing the longitude coordinates.

Details

To map this dataset on the unit sphere, function euclid in package Directional can be used.

Source

European-Mediterranean Seismological Centre, https://www.emsc-csem.org.

Examples

if (requireNamespace("ggplot2", quietly = TRUE)) {
library(ggplot2)
}
if (requireNamespace("maps", quietly = TRUE)) {
library(maps)
}
if (requireNamespace("mapproj", quietly = TRUE)) {
library(mapproj)
}
data(earthquakes)
world <- map_data("world")
g.earthquakes <- ggplot() +
  geom_map(data = world, map = world,
           mapping = aes(map_id = region),
           color = "grey90", fill = "grey80") +
  geom_point(data = earthquakes,
            mapping = aes(x = Longitude, y = Latitude),
            color = "red",alpha=.2,size=.75,stroke=0) +
    scale_y_continuous(breaks = NULL, limits = c(-90, 90)) +
  scale_x_continuous(breaks = NULL, limits = c(-180, 180)) +
  coord_map("mercator")
g.earthquakes

HDiR documentation built on Nov. 16, 2022, 5:14 p.m.