In chinmaymandal/Assignment3.2.1: Package for FARS accident data analysis

library(Assignment3.2.1)
library(dplyr)
library(maps)

This vignette gives an overview of the Assignment3.2.1. The package is designed to analyze FARS data.

Package functions

Following are exported functions:

• fars_read()
• fars_summarize_years()
• fars_map_state()

For example purpose data on FARS can be found in \extdata folder.

Read from a CSV file

The function fars_read() can be used to read from a csv file.validates the file path and abort the process if the path is incorrect with an error message. This function returns a data frame of records.

filename <- system.file("extdata/accident_2013.csv.bz2", package = "Assignment3.2.1")
fars_read(filename)

Summarize accident cases

The function fars_summarize_years() takes a list of years and based on the data, a summary of accidents occured in a given month and year is prepared. The input file should be present in data folder inside working directory.

setwd(system.file("extdata", package = "Assignment3.2.1"))
fars_summarize_years(2013:2015)

Plotting accident locations on map

The function fars_map_state() helps to plot the accident hit location on map. It takes two input the satate number and year.

setwd(system.file("extdata", package = "Assignment3.2.1"))
fars_map_state(45, 2015)

Note that the echo = FALSE parameter was added to the code chunk to prevent printing of the R code that generated the plot.

chinmaymandal/Assignment3.2.1 documentation built on May 13, 2019, 5:26 p.m.