README.md

In lefkiospaikousis/LPfars: Explore and Analyse Data from Fatal Analysis Reporting System

LPfars is a package that was built for the purposes of the Coursera course Building R Packages

LPfars

The goal of LPfars is to read and summarise the monthly injuries, and plot the density of fatal injuries on a map

Installation

You can install the released version of LPfars from Github with:

devtools::install_github("lefkiospaikousis/LPfars")

Example

The fars_summarize_years returns a summary table with the number of monthly accident cases (row) and the defined year(s) (column). Here the input parameter canbe a numeric vector or a list of the year values.

library(LPfars)

# Set the working directory to the location of the files
# This is for demontrating purposes. Once you have your datasets in your current working directory, you will not have to do this

files_location = system.file("extdata", package = "LPfars")

setwd(files_location)

fars_summarize_years(2013:2015)
#> # A tibble: 12 x 4
#>    MONTH `2013` `2014` `2015`
#>    <dbl>  <int>  <int>  <int>
#>  1     1   2230   2168   2368
#>  2     2   1952   1893   1968
#>  3     3   2356   2245   2385
#>  4     4   2300   2308   2430
#>  5     5   2532   2596   2847
#>  6     6   2692   2583   2765
#>  7     7   2660   2696   2998
#>  8     8   2899   2800   3016
#>  9     9   2741   2618   2865
#> 10    10   2768   2831   3019
#> 11    11   2615   2714   2724
#> 12    12   2457   2604   2781

Notes

The package re-exports the %>% operator from the package magritrr so you can perfom exploratory analysis the tidyverse way!

What is the FARS

The Fatality Analysis Reporting System (FARS) contains data derived from a US nationwide census regarding fatal injuries suffered in motor vehicle traffic crashes

See here on how to create datasets and use the package

Example Data

You can find the location of the example csv files on your disk by typing

system.file("extdata", package = "LPfars")

Also, you can get the file name of the an example data by typing

system.file("extdata", "accident_2013.csv.bz2", package = "LPfars")

Package Functions

The LPfars package has five functions:

• The fars_read function for reading the data in R as a csv file

• The fars_read_years function that reads multiple csv files from disk

• The fars_summarize_years function for comparing monthly summaries

• The The fars_map_state function to create a map plot where the accidents occurred

• The make_filename function that concatenates string values and creates a filename in a standard format of accident_YEAR.csv.bz2

lefkiospaikousis/LPfars documentation built on June 7, 2019, 12:55 a.m.