geom_timeline: Create timeline plots

In kjsykora/earthquake: Earthquake

Description

stat_timeline is a useful tool for filter operations on timeline geoms

geom_timeline() reads in cleaned data and creates timeline plots of earthquakes.

Provides labels for a timeline generated from geom_timeline() geom_timelinelabel() reads in cleaned data and creates labels for the data points

Usage

stat_timeline(mapping = NULL, data = NULL, geom = "timeline",
  position = "identity", na.rm = FALSE, show.legend = NA,
  inherit.aes = TRUE, n_max = NULL, ...)

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

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

Arguments

mapping	Set of aesthetic mappings created by aes or aes_. If specified and inherit.aes = TRUE (the default), it is combined with the default mapping at the top level of the plot. You must supply mapping if there is no plot mapping.
data	The data to be displayed in this layer. There are three options: If NULL, the default, the data is inherited from the plot data as specified in the call to ggplot. A data.frame, or other object, will override the plot data. All objects will be fortified to produce a data frame. See fortify for which variables will be created. A function will be called with a single argument, the plot data. The return value must be a data.frame., and will be used as the layer data.
geom	The geometric object to use display the data
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? NA, the default, includes if any aesthetics are mapped. FALSE never includes, and TRUE always includes.
inherit.aes	If FALSE, overrides the default aesthetics, rather than combining with them. This is most useful for helper functions that define both data and aesthetics and shouldn't inherit behaviour from the default plot specification, e.g. borders.
n_max	Optional parameter that determines the max number of earthquakes to plot/annotate
...	other arguments passed on to layer. These are often aesthetics, used to set an aesthetic to a fixed value, like color = "red" or size = 3. They may also be parameters to the paired geom/stat.
stat	The statistical transformation to use on the data for this layer, as a string.

Aesthetics

geom_timeline understands the following aesthetics (required aesthetics are in bold):

• x

• xmin

• xmax

• mag

geom_timeline understands the following aesthetics (required aesthetics are in bold):

• x

• xmin

• xmax

• y

• colour

• size

• alpha

• shape

• fill

• stroke

geom_timelinelabel understands the following aesthetics (required aesthetics are in bold):

• x

• label

• xmin

• xmax

• y

• mag

• colour

• size

• angle

• hjust

• vjust

• alpha

• family

• fontface

• lineheight

• linesize

• linecolor

Examples

data(earthquake_raw)
earthquake_clean <- earthquake_raw %>%
eq_clean_data()
ggplot(data=earthquake_clean %>%
        filter(COUNTRY %in% c("CHINA", "USA") ))+
 geom_timeline(aes(x = DATE, color = log(DEATHS, base = 10), y = COUNTRY,
                   alpha = 1, xmin=as.Date("2000-01-01"), 
                   xmax=as.Date("2015-12-31"), size = EQ_PRIMARY)) +
 scale_color_continuous()+
 theme_minimal()+theme(legend.position = "bottom")



data(earthquake_raw)
earthquake_clean <- earthquake_raw %>%
eq_clean_data()
ggplot(data=earthquake_clean %>%
         filter(COUNTRY %in% c("CHINA", "USA") ))+
  geom_timelinelabel(aes(x = DATE, label= LOCATION_NAME, y = COUNTRY,
                         xmin=as.Date("2000-01-01"), 
                         xmax=as.Date("2015-12-31"), 
                         mag = EQ_PRIMARY), n_max = 4)+
  geom_timeline(aes(x = DATE, color = log(DEATHS, base = 10), y = COUNTRY,
                    alpha = 1, xmin=as.Date("2000-01-01"), 
                    xmax=as.Date("2015-12-31"),
                     size = EQ_PRIMARY)) +
  scale_color_continuous()+
  theme_minimal()+theme(legend.position = "bottom")

kjsykora/earthquake documentation built on May 29, 2019, 3:38 a.m.