expand_pedmat: Expand a Compact Pedigree Matrix to Full Dimensions

In visPedigree: Tidying, Analysis, and Fast Visualization of Animal and Plant Pedigrees

Expand a Compact Pedigree Matrix to Full Dimensions

Description

Restores a compact pedmat to its original dimensions by mapping each individual to their family representative's values. For non-compact matrices, returns the matrix unchanged.

Usage

expand_pedmat(x)

Arguments

x	A pedmat object from pedmat.

Details

For compact matrices, full-siblings within the same family will have identical relationship values in the expanded matrix because they shared the same representative during calculation.

Value

Matrix or vector with original pedigree dimensions:

• Matrices: Row and column names set to all individual IDs

• Vectors (e.g., method="f"): Names set to all individual IDs

The result is not a pedmat object (S3 class stripped).

See Also

pedmat, query_relationship

Examples

tped <- tidyped(small_ped)

# Compact matrix
A_compact <- pedmat(tped, method = "A", compact = TRUE)
dim(A_compact)  # Reduced dimensions

# Expand to full size
A_full <- expand_pedmat(A_compact)
dim(A_full)  # Original dimensions restored

# Non-compact matrices are returned unchanged
A <- pedmat(tped, method = "A", compact = FALSE)
A2 <- expand_pedmat(A)
identical(dim(A), dim(A2))  # TRUE

visPedigree documentation built on March 30, 2026, 9:07 a.m.