In yzhang3142/fars: Building R Package Practice

This package provides two helper functions that provide summary and visualization on certain type of data files.

• Internval functions
  • fars_read(filename) - Read data from a csv file
  • make_filename() - Generate a file name in a specific convension
  • fars_read_years() - Read data from multiple csv files
• External functions:
  • fars_summarize_years() - Count number of accidents happend in each month and year
  • fars_map_state() - Plot the locations of accidents happend in a given state and year

Data Files

In order to execute the functions properly, data files need to be placed in the current working directory with a naming convension of accident_yyyy.csv.bz2, where yyyy indicates a year. Sample data files can be found in the pacakge's extdata folder.

Example

# Get specific columns from each data file
fars_summarize_years(c(2013, 2014, 2015))

# Plot a map to show the location of accidents recorded in the data file
fars_map_state(4, 2013)

yzhang3142/fars documentation built on May 28, 2019, 7:38 a.m.