In richcmwang/Fars: A practice for Coursera Course

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.

Vignette Info

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.

Examples

The numbers of fatal accidents during 2014 is as follows:

library(dplyr, quietly = TRUE)
Fars::fars_summarize_years(2014)

The 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)

richcmwang/Fars documentation built on May 5, 2019, 3:49 p.m.