In bgreenwell/mds: Mission Design Series

mds: R Tools for Working with Mission Design Series

Mission Design Series (MDS) refer to the three main parts of the designation that combine to form a unique profile for each USAF vehicle. The first series of letters (up to four) determine the type of craft and designed mission. A series number identifies major types which are of the same type and mission, and finally a series of variant and block identifiers clarify the exact configuration of the vehicle. The R package mds provides various tools for working with these codes (e.g., detecting invalid codes and standardization).

Installation

Package mds is not currently available from CRAN, but the development version is hosted on GitHub at https://github.com/bgreenwell/mds and can be installed using devtools:

# Assuming devtools is already installed
devtools::install_github("bgreenwell/mds")

Bug reports should be submitted to https://github.com/bgreenwell/mds/issues.

Current functions

The following functions are currently available:

• add_hyphen - adds a hyphen to each MDS. For example, "F16" would become "F-16".
• get_mds_components - extracts the six components from an MDS
• is_invalid_mds - returns TRUE for each invalid MDS
• is_valid_mds - returns TRUE for each valid MDS
• standardize_mds - strips leading zeros and forces/removes all hyphens
• strip_hyphen - removes the hyphen from each MDS. For example, "F-16" would become "F16".
• strip_leading_zeros - removes leading zeros from the design number of each MDS. For example, "F016" would become "F16".

Basic usage

# Required packages
library(mds)

# Regular expression for MDS
print(MDS_REGEX)

# Example vector of MDS values
mds <- c("YEH-60B", "YEH-60B1", "AYEH-60B", "F-16A", "F16", "F016", "YRAH-66A")

# Check which ones are valid
is_valid_mds(mds)

# Clean up a bit
mds %>%
  strip_leading_zeros %>%
  strip_hyphen

# Alternatively
standardize_mds(mds, hyphen = FALSE)

# Default is to make sure each MDS contains a hyphen before the design number
standardize_mds(mds)

# Extract all components
plyr::ldply(mds, get_mds_components)

bgreenwell/mds documentation built on May 12, 2019, 8:19 p.m.