The functions provided 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.
Two major functions in this package. fars_summarize_years returns a dataframe which summarise the number of accidents during given years. fars_map_state draws a map of a given state number and plots locations of the accidents on given years. The remaining functions make_filename, fars_read and fars_read_years are helper functions for the two major functions. make_filename return the data file name of an input year. fars_read reads in data from an input datafile. fars_read_years reads in data of a vector of year extract the month and year information and store them in a list.
The numbers of fatal accidents during 2014 is as follows:
library(dplyr, quietly = TRUE)
#>
#> Attaching package: 'dplyr'
#> The following objects are masked from 'package:stats':
#>
#> filter, lag
#> The following objects are masked from 'package:base':
#>
#> intersect, setdiff, setequal, union
Fars::fars_summarize_years(2014)
#> # A tibble: 12 × 2
#> MONTH `2014`
#> * <int> <int>
#> 1 1 2168
#> 2 2 1893
#> 3 3 2245
#> 4 4 2308
#> 5 5 2596
#> 6 6 2583
#> 7 7 2696
#> 8 8 2800
#> 9 9 2618
#> 10 10 2831
#> 11 11 2714
#> 12 12 2604The following call on fars_map_state draw a map of state Colorado and plots locations of fatal accidents.
library(maps)
Fars::fars_map_state(51, 2013)
Travis CI
