geom_timeline: Visualize the times at which earthquakes occur within certain...
In llangevin/EQVT: EarthQuakes Visualization Tools

Description Usage Arguments Details Value Examples

In addition to showing the dates on which the earthquakes occur, we can also show the magnitudes (i.e. Richter scale value) and the number of deaths associated with each earthquake.

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

`mapping`	Set of aesthetic mappings created.
`data`	The data to be displayed in this layer.
`stat`	The statistical transformation to use on the data for this layer, as a string.
`position`	Position adjustment, either as a string, or the result of a call to a position adjustment function.
`na.rm`	If 'FALSE', the default, missing values are removed with a warning. If 'TRUE', missing values are silently removed.
`show.legend`	logical. Should this layer be included in the legends?
`inherit.aes`	If FALSE, overrides the default aesthetics, rather than combining with them.
`...`	Other arguments passed on to [layer()]. These are often aesthetics, used to set an aesthetic to a fixed value, like 'colour = "red"' or 'size = 3'. They may also be parameters to the paired geom/stat. #' @section Aesthetics: `geom_timeline` understands the following aesthetics (properties of the plot that can show certain elements of the data) (required aesthetics are in bold): `x` #Time variable `y` #Factor indicating some stratification `color` #Color of border of elements `shape` #Shape `size` #Size `alpha` #Transparency (1: opaque; 0: transparent) `fill` #Color of inside of elements `stroke` #Stroke

The data to be used with this geom must be downloaded and readed from NOAA site, https://www.ngdc.noaa.gov/nndc/struts/form?t=101650&s=1&d=1.

The geom geom_timeline used with the ggplot function, produce a time line plot of selected earthquakes.

# The data must be cleaned using the function \code{eq_clean_data}, included in the package.
# Aesthetics can be specified in the \code{ggplot} function or in \code{geom_timeline} geom function
## Not run: 
data <- readr::read_delim("signif.txt", delim = "\t")
data <- eq_clean_data(data)
data %>%
dplyr::filter(COUNTRY == c("MEXICO","USA") & lubridate::year(DATE) >= 2010) %>%
ggplot(aes(x=DATE,y=COUNTRY,color=TOTAL_DEATHS,size=EQ_PRIMARY)) +
geom_timeline(alpha=.5) +
theme(legend.position="bottom", legend.box="horizontal", plot.title=element_text(hjust=0.5)) +
ggtitle("Earthquakes Visualization Tool") +
labs(size = "Richter scale value", color = "# deaths")

## End(Not run)