Tidying and Visualizing Animal Pedigrees

The visPedigree package provides tools to check for duplicate and bisexual individuals, detect pedigree loops, add missing founders, sort parents before offspring, and trace the pedigrees of specified candidates. It generates hierarchical graphs for all individuals in a pedigree and can handle very large datasets (> 10,000 individuals per generation) by compacting full-sib groups. It is particularly effective for aquatic animal pedigrees, which often include numerous full-sib families per generation in nucleus breeding populations.

More complex pedigree graphs and usage examples can be found in the package vignettes.

Installation

From CRAN

(Note: The package is preparing for submission and not yet available on CRAN)

# install.packages("visPedigree")

From GitHub

You can install the development version from GitHub using the devtools package:

# install.packages("devtools")
devtools::install_github("luansheng/visPedigree")

Quick Start

library(visPedigree)

# Example 1: Tidy and visualize a small pedigree
# Draw the pedigree, compacting full-sib individuals and highlighting candidates.
# Note: the compacted candidates are also highlighted here.
cands <- c("Y", "Z1", "Z2")
small_ped |>
  tidyped(cand = cands) |>
  visped(compact = TRUE, highlight = cands)

# Example 2: Calculate and show inbreeding coefficients
library(data.table)
data.table(
  Ind = c("A", "B", "C", "D", "E"),
  Sire = c(NA, NA, "A", "C", "C"),
  Dam = c(NA, NA, "B", "B", "D"),
  Sex = c("male", "female", "male", "female", "male")
) |>
  tidyped(inbreed = TRUE) |>
  visped(highlight = c("E"), showf = TRUE)

# Example 3: Summarize pedigree statistics
# Get a quick overview of the pedigree structure
small_ped |>
  tidyped() |>
  summary()

Citation

LUAN Sheng (2018). visPedigree: A package for tidying and visualizing animal pedigrees. URL https://github.com/luansheng/visPedigree.