In flyeye/Fars: Fatality Analysis Reporting System accident`s data processing

Fars data and routings

This package contains routings designed for processing and visualizing of the data files provided by US National Highway Traffic Safety Administration's Fatality Analysis Reporting System, which is a US nationwide census providing the American public yearly data regarding fatal injuries suffered in motor vehicle traffic crashes. The raw data files for years 2013, 2014 and 2015 are included in the package and can be accessed by the following code:

 year <- as.integer(2014)
 system.file("extdata", sprintf("accident_%d.csv.bz2", year), package = "Fars")

Fars package consist of a few function, providing access to this data, some simple processing and visualising. This functions are descibed below.

Functions in a Fars package

knitr::opts_chunk$set(echo = TRUE, warning=FALSE)
library(Fars)

fars_read()

Read accidents statistics by the given file name Open file with accidents statistics by the given file name and read it into dplyr::tbl_df variable.

Parameters

filename - character string with file name

output

dplyr::tbl_df data frame with accident`s data

examples

  name <- system.file("extdata", sprintf("accident_%d.csv.bz2", 2014), package = "Fars")
  data <- fars_read(name)
  data[1:3, 1:10]

make_filename()

Function returns full filename of the accident data stored as a raw files in a package as character by the given year

Parameters

year - year of accidents

output

filename - full file name as a character string

examples

make_filename(2014)

fars_read_years()

Read accident`s data by given years and return data frame with short info for each accident.

Parameters

years - vector of years

output

Data frame of class dplyr::tbl_df with two columns (month ans year) per each accident. If data for any of given years do not exist function stops working and return an error message.

examples

 data <- fars_read_years(c(2013, 2014, 2015))
 data[[1]]

fars_summarize_years()

Function takes given vector of years and summarize statistical data about accidents.

Parameters

years - vector of years

output

Data frame with summary about accidents in the given years: quantity of accidents per month for each year. If data for any of given years do not exist function stops working and return an error message.

examples

  fars_summarize_years(c(2013, 2014, 2015))

fars_map_state()

Function fars_map_state() draw a map of state with accidents on it by the given state and year. Accidents are represented as points.

Parameters

year - interested year of accidents

state.num - USA state code

output

Graphical map.

examples

fars_map_state(state.num = 1, year = 2014)

flyeye/Fars documentation built on May 16, 2019, 1:42 p.m.