In vnmath/FRAS: FRAS Data data analysis

library(FRAS)
library(dplyr)
library(maps)

This vignette gives an introduction to the FRAS package. The package contains a set of functions used for analysis of data from FARS - Fatality Analysis Reporting System. FARS is a nationwide census providing NHTSA, Congress and the American public yearly data regarding fatal injuries suffered in motor vehicle traffic crashes. We can get from: [1]

Package functions

There are three exported functions available to users:

• fars_read()
• fars_summarize_years()
• fars_map_state()

We will use data from FARS, years 2013-2015, that can be found in the package directory under \dataset folder for create the examples.

Read FARS data files

The function fars_read() provides a way how to read data from a file path provided as an argument. It returns a tibble with loaded data:

filename <- system.file("extdata/accident_2014.csv.bz2", package = "FRAS")
fars_read(filename)

Summarize the number of accidents

The 2nd function fars_summarize_years() input a list of years with integer values as an argument. If the input files with data are available, it returns a data frame with number of accidents per year and month. The data files need to be located in the working directory.

setwd(system.file("extdata", package = "FRAS"))
fars_summarize_years(2013:2015)

Plot accident locations

The last function is fars_map_state() needs a state number and year as arguments. It returns a plot of the state with accident locations associated with years. This is an example showing how to use this function.

setwd(system.file("extdata", package = "FRAS"))
fars_map_state(10, 2013)

vnmath/FRAS documentation built on May 18, 2020, 12:06 a.m.