In veronicavedovetto/fars: Useful Function for US Fatality Analysis Reporting System

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)

library(fars)

The fars package

This package provides some functions to analyse data from the US National Highway Traffic Safety Administration's Fatality Analysis Reporting System, which is a nationwide census providing the American public yearly data regarding fatal injuries suffered in motor vehicle traffic crashes.

In the package there are 3 exemplificative files of how the data looks like and that can be used to have a better idea of how the functions work.

After you installed the fars package from the GitHub repository with the following command:

install_github("veronicavedovetto/fars", build_vignettes = TRUE)

you can source it as every other package with:

library(fars)

Now you can start using the available functions.

The functions of the package are:

• make_filename
• fars_read
• fars_read_years
• fars_summarize_years
• fars_map_state

These functions have been modified to allow the user play with the data that comes with the package (demo = TRUE). For real use you need to have zipped csv files in the working directory.

The first function creates the name of (or the path to) the zipped csv file. Its a vectorized function so it works also for a vector of years. Usually the user don't need to run this function directly, because it is embedded in the main functions of the package, but can turn useful if you need to perform other actions to the data.

file2013 <- make_filename(2013, demo = TRUE)
file2013

Thefars_read function reads the zipped csv file and imports it in a tibble. So you can explore it easily and apply all the functions available in R for this purpose.

df2013 <- fars_read(file2013)
head(df2013)

This function reads multiple files at one time but returns only some of the variables present in the data.

list2013_2014 <- fars_read_years(2013:2014, demo = TRUE)

head(list2013_2014[[1]])

fars_read_years is embedded in the following function that produces a monthly summary of the number of accidents happened in the years selected.

fars_summarize_years(2013:2014, demo = TRUE)

Finally the fars_map_state function returns a plot of the places where accidents happened for a certain State in a certain year. This function doesn't allow more than one state and year at time.

fars_map_state(1, 2013, demo = TRUE)

veronicavedovetto/fars documentation built on Dec. 18, 2019, 12:33 a.m.