In LOT801106/FARS: Reads, creates tables & Plots from Fatality Analysis Reporting System (FARS) data

Package Description

FARS R package reads, summarizes and plots Fatality Analysis Reporting System (FARS) data from the National Highway Traffic Safety Administration.

The packages consists of five functions:

• make_filename

• fars_read

• fars_read_years

• fars_summarize_year

• fars_map_state

Data

The functions provided for you in this assignment will be using 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. Once the package is installed 3 example files are accessible as follows:

system.file('extdata', 'accident_2013.csv.bz2', package = 'FARS')
system.file('extdata', 'accident_2014.csv.bz2', package = 'FARS')
system.file('extdata', 'accident_2015.csv.bz2', package = 'FARS')

Functions

Load Packages

library(FARS)
library(maps)

Using make_filename

This function reads a year number as an integer and adds it to the general filename "accident_.csv.bz2", to create a string filename "accident_YEAR.csv.bz2".

make_filename(2015)
make_filename("2013")

Using fars_read

This function reads a csv file (can be compressed in bz2 format) & returns a data frame (tibble) with the loaded data.

fars_read("accident_2015.csv.bz2")

Using fars_read_years

This function reads the 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 from a file type "accident_YEAR.csv.bz2", creates a data frame with multiple columns and selects the specified Years and their correspondent Month columns. Then it creates a list with separate data frames for each year. Each data frame contains two columns: month and year.

fars_read_years(2013:2015)
fars_read_years(2014)

Using fars_summarize_years

This function reads the 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.Then creates several data frames in a list, groups them by year, makes a summary of the number of accidents by MONTH and creates a data frame with this data with Year's as columns and MONTH's as rows.

fars_summarize_years(2013:2015)
fars_summarize_years(2014)

Using fars_map_state

This function reads the 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. Then selects data from a specific state and a specific year and plots the location of the accidents in a map of the state.

fars_map_state(1,2015)

LOT801106/FARS documentation built on May 10, 2019, 2:41 p.m.