In sbudiman/brpextravis: Build R Package final test from Coursera

knitr::opts_chunk$set(
  collapse = TRUE,
  comment = "#>"
)

library(knitr)

brpextravis package contains functions that read US National Highway Traffic Safety Administration's Fatality Analysis Reporting System (FARS) data and summarize them. The source data is from the https://www.nhtsa.gov/research-data/fatality-analysis-reporting-system-fars.

Package Info

The package contains 5 functions:

1. fars_read that takes string filename as input and returns full data from the file in data frame.
2. make_filename that takes integer year as input and returns FARS source data filename for the given year.
3. fars_read_years that takes a vector of integer years as input and returns a list of data frames containing fatality incidents for every months for each given year.
4. fars_summarize_years that takes a vector of integer years as input and returns a summarized data frame containing the number of incidents for every month & year. Month and Years are represented in the columns.
5. fars_map_state that takes an integer state number and integer year as inputs and returns a state map with plots, where each dot represents a fatality incident.

Sample Summarized Data

The package comes with a sample summarized yearly data for year 2013 to 2015 called farsyrsum. It is the output of fars_summarize_years(2013:2015).

filename <- file.path("..","data","farsyrsum.rda")
load(filename)
knitr::kable(farsyrsum)

sbudiman/brpextravis documentation built on May 17, 2019, 8:44 p.m.