geom_timeline_label: Label timeline geom for NOAA earthquakes data

In jdallmann/NOAAviz: Clean and visualize NOAA earthquake data

Description

geom_timeline_label is used for adding annotations to NOAA earthquake data. "This geom adds a vertical line to each data point with a text annotation (e.g. the location of the earthquake) attached to each line. There should be an option to subset to n_max number of earthquakes, where we take the n_max largest (by magnitude) earthquakes. Aesthetics are x, which is the date of the earthquake and label which takes the column name from which annotations will be obtained." (Mastering Software Development in R Capstone, Week 2)

Usage

geom_timeline_label(mapping = NULL, data = NULL, stat = "identity",
  position = "identity", na.rm = FALSE, show.legend = NA,
  inherit.aes = TRUE, ...)

Arguments

mapping	aesthetic mappings
data	The datafram to create a timeline for
stat	The stat to transform the data with, by default "identity"
position	Adjusts the position of the layer in the grob
na.rm	If FALSE, the default, missing values are removed with a warning. If TRUE, missing values are silently removed.
show.legend	Display legends
inherit.aes	Should the aes be inherited
...	Other args

Value

a ggplot timeline object with labels

Examples

## Not run: 
paste0("https://www.ngdc.noaa.gov/",
       "nndc/struts/results?type_0=Exact&",
       "signif.txtquery_0=$ID&t=101650&s=13&",
       "d=189&dfn=signif.txt") %>%
    readr::read_delim(delim = "\t") %>%
    eq_clean_data() %>%
    dplyr::filter(COUNTRY = "ANTARTICA") %>%
    ggplot2::ggplot(aes(x = DATE, Y = COUNTRY)) +
    geom_timeline() +
    geom_timeline_label(aes(label = LOCATION_NAME),
                        n_max = 5)

## End(Not run)

jdallmann/NOAAviz documentation built on Nov. 4, 2019, 2:35 p.m.