WhopGenome

WhopGenome processes large-scale variant call format (VCF) files and related genomic data within the R environment to enable efficient reading of local and remote VCFs, Tabix-indexed access, FASTA indexing, integration with UCSC genome annotations, and reading/writing of PLINK .PED pedigree files for population-scale resequencing analyses.

Key Features:

• Efficient VCF Data Handling: Reads whole-genome VCF files into R-compatible data types with performance optimizations for large-scale datasets and supports VCFs stored locally or on remote servers.
• Integration with Genome Annotations: Maps and integrates variant data with annotations from the UCSC Genome Browser.
• Selective Data Access: Applies user-defined filtering criteria to read subsets of loci and reduce input/output for targeted analyses.
• Support for Tabix-indexed Files: Reads Tabix-indexed files to enable efficient region-specific access to genomic data.
• FASTA File Indexing: Creates indices for FASTA files to permit fast, selective sequence retrieval.
• Pedigree Data Management: Reads, modifies, and writes PLINK .PED-format pedigree files for linkage and family-based analyses.

Scientific Applications:

• Population genetics studies: Processing and annotation of population-scale variant datasets for population-genomic analyses.
• Genome-wide association studies (GWAS): Providing fast access to variant and annotation data to support GWAS input preparation and variant filtering.
• Genetic linkage and family-based studies: Enabling pedigree-based analyses via PLINK .PED read/modify/write functionality.
• Comparative genomics analyses: Facilitating sequence retrieval and comparison through FASTA indexing.

Methodology:

Leverages compatibility with the R programming environment, optimizes the reading and processing of large VCF files, and integrates with UCSC genome annotation resources.