Regional Association Plot (Zoomed-in View) — plot_regional

Creates a regional association plot showing detailed view of genomic region around a specific pleiotropic SNP. Shows all associations in the region across all traits, highlighting the pleiotropic SNP of interest.

Usage

plot_regional_association(
  pleio_data,
  target_snp,
  window_size = 5e+05,
  highlight_color = "#E31A1C",
  show_gene_names = FALSE,
  gene_data = NULL
)

Arguments

pleio_data: A data.frame containing pleiotropy analysis results
target_snp: Character. Target SNP ID to zoom in on (required)
window_size: Integer. Window size in base pairs (default: 500000)
highlight_color: Character. Color for target SNP (default: "#E31A1C")
show_gene_names: Logical. Show nearby gene names (default: FALSE)
gene_data: Optional data.frame with gene annotations (CHR, START, END, NAME)

Value

A ggplot2 regional plot object

Examples

data(gwas_subset)
pleio_results <- detect_pleiotropy(gwas_subset)
if (nrow(pleio_results) > 0 && "rs814573" %in% pleio_results$SNPS) {
    p <- plot_regional_association(pleio_results, target_snp = "rs814573")
    print(p)
}