In marcelamu95/repo_packagefars: Summary of data per year on fatal injuries suffered in car accidents in the US

Load Packages

library(packagefars)

This document describes how to use the packagefars package and the example.

packagefars package includes five functions described below with their respective examples.

Included data

The functions of this package using data from the US National Highway Traffic Safety Administration's Fatality Analysis Reporting System for three years (2013, 2014, 2015)

Data files included within the package are:

knitr::opts_chunk$set(# Collapse output blocks
                      collapse = TRUE, 
                      comment = "#>", 
                      fig.width = 7, 
                      fig.height = 7, 
                      fig.align = "center")
# We set the working directory where the compressed files are stored within the
# package.
x <- system.file("extdata", package = "packagefars")
knitr::opts_knit$set(root.dir = x)
library(packagefars)

list.files(system.file("extdata", package = "packagefars"))

Functions 1: fars_read

This function receives a .csv file and returns tbl_df of the data.This function print an error message when .csv file does not exist

function1 <- fars_read("accident_2013.csv.bz2")

Functions 2: make_filename

This function allows you to create accident data files per year receive the file in csv.bz2 format

make_filename(2013)

Functions 3:fars_read_years

This function receives a list of years (one or several years) and calls the make_filename() function for each year and then fills those files with the corresponding year data from the main data set.

fars_read_years(years = 2013)

Function 4 fars_summarize_years

Receive a list of years (one or several years) . This function receives a set of data with the month and year columns, count the number number of fatalities by month for each given yea.

# Creates a table by month & year with the total number of fatalities in 2013 y 2014.
data_2013 <- fars_summarize_years(c(2013,2014))
data_2013

Function 5 fars_map_state

This function creates a map with the car fatalities in a US state and a specific year.

# Plots the car fatalities for the state of Florida (12) in 2015. 
fars_map_state(12, 2015)

marcelamu95/repo_packagefars documentation built on Nov. 4, 2019, 5:22 p.m.