geom_timeline: The geom_timeline function

In simongarisch/R-Capstone-NOAA: Coursera R Capstone project

Description

Used in conjunction with GeomTimeline. See the layout contained within the course materials p.g. 452 Here the layout of this function is very similar. This geom looks to chart a timeline of earthquakes for a given country / countries with points (in the example) representing earthquake events, point size indicating earthquake magnitude and colour representing number of deaths. x (the date) is a required aesthetic whereas y (country) is optional.

Usage

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

Examples

## Not run: 
 df <- df_earthquakes %>% filter(COUNTRY %in% c("CHINA", "USA"), YEAR > 2000)
 ggplot(df, aes(x = date, y = COUNTRY,
                color = as.numeric(TOTAL_DEATHS),
                size = as.numeric(EQ_PRIMARY),
                label = CLEAN_LOCATION_NAME)) +
   geom_timeline() +
   labs(size = "Richter scale value", color = "# deaths") +
   ggplot2::theme(panel.background = ggplot2::element_blank(),
         legend.position = "bottom",
         axis.title.y = ggplot2::element_blank()) +
   ggplot2::xlab("DATE")

## End(Not run)

simongarisch/R-Capstone-NOAA documentation built on May 24, 2019, 7:25 p.m.