eq_map: Earthquake map

In cogitoergoread/noaa: Display Earthquake Data in Timeline and in Map by HTML Widget.

Description

The function takes an argument data containing the filtered data frame with earthquakes to visualize. The function maps the epicenters (LATITUDE/LONGITUDE) and annotates each point with in pop up window containing annotation data stored in a column of the data frame. The user should be able to choose which column is used for the annotation in the pop-up with a function argument named annot_col. Each earthquake should be shown with a circle, and the radius of the circle should be proportional to the earthquake’s magnitude (EQ_PRIMARY).

Usage

eq_map(frame, annot_col = "date")

Arguments

frame	The earthquake data frame. See the documentaton in the data part. A cleaned version also can be used, cleaning: 'eq_clean_data()'.
annot_col	The data frame column name containing the popup annotation.

Value

a leaflet widget object. The output can be interactive if viewed in the “Viewer” panel of RStudio or if included in a HTML document created with R Markdown, and they can be incorporated into Shiny web applications.

Author(s)

József Varga

Examples

earthquakes %>%
  eq_clean_data() %>%
  dplyr::filter(COUNTRY == "MEXICO" & lubridate::year(date) >= 2000) %>%
  eq_map(annot_col = "EQ_PRIMARY")

cogitoergoread/noaa documentation built on May 20, 2019, 1:28 p.m.