LDlinkR (version 1.4.0)

LDmatrix: Generates a data frame of pairwise linkage disequilibrium statistics.

Description

Generates a data frame of pairwise linkage disequilibrium statistics.

Usage

LDmatrix(
  snps,
  pop = "CEU",
  r2d = "r2",
  token = NULL,
  file = FALSE,
  genome_build = "grch37",
  api_root = "https://ldlink.nih.gov/LDlinkRest"
)

Value

a data frame

Arguments

snps

list of between 2 - 2500 variants, using an rsID or chromosome coordinate (e.g. "chr7:24966446")

pop

a 1000 Genomes Project population, (e.g. YRI or CEU), multiple allowed, default = "CEU"

r2d

r2d, either "r2" for LD R2 or "d" for LD D', default = "r2"

token

LDlink provided user token, default = NULL, register for token at https://ldlink.nih.gov/?tab=apiaccess

file

Optional character string naming a path and file for saving results. If file = FALSE, no file will be generated, default = FALSE.

genome_build

Choose between one of the three options...`grch37` for genome build GRCh37 (hg19), `grch38` for GRCh38 (hg38), or `grch38_high_coverage` for GRCh38 High Coverage (hg38) 1000 Genome Project data sets. Default is GRCh37 (hg19).

api_root

Optional alternative root url for API.

Examples

if (FALSE) LDmatrix(c("rs3", "rs4", "rs148890987"),
                  "YRI", "r2",
                  token = Sys.getenv("LDLINK_TOKEN"))