PlinkMatrix

PlinkMatrix provides a DelayedArray interface for plink bed files, enabling efficient out-of-memory access to genotype data through RangedSummarizedExperiment structures.

Key Features:

• DelayedArray Interface: Enables memory-efficient representation and manipulation of large-scale plink bed genotype data without loading entire datasets into memory.
• RangedSummarizedExperiment Support: Provides direct interfacing to plink genotype data through the Bioconductor RangedSummarizedExperiment class for integrated genomic range-based analysis.
• Example Data Integration: Includes demonstration data from the GEUVADIS project sourced from internationalgenome.org for testing and validation workflows.

Scientific Applications:

• Genome-Wide Association Studies: Facilitates scalable analysis of plink-formatted genotype data in large cohort studies by enabling chunked, on-disk data access.
• Population Genomics: Supports analysis of international reference datasets such as GEUVADIS/1000 Genomes data through standardized Bioconductor data structures.

Methodology:

The package implements a DelayedArray backend for plink bed files and interfaces with RangedSummarizedExperiment for coordinate-based genotype data representation.