get_g: Estimate Number of Generations since Admixture

In kegrinde/STEAM: Significance Threshold Estimation for Admixture Mapping

Estimate Number of Generations since Admixture

Description

Estimate the number of generations since admixture (g) from the observed local ancestry correlation curves using non-linear least squares regression. More details in Grinde et al. (TBD).

Usage

get_g(lacorr, start.a = 0, start.b = 1, start.g = 10)

Arguments

lacorr	local ancestry correlation; data frame with 3 columns: theta = recomb frac; corr = correlation; anc = ancestry components (e.g., 1_1, 1_2, 1_3, 2_2, 2_3, 3_3)
start.a	starting value for intercept; default = 0
start.b	starting value for slope; default = 1
start.g	starting value for g; default = 10

Value

A single number indicating the estimated number of generations since admixture.

Examples

get_g(lacorr = example_corr)
get_g(lacorr = example_corr_K3)

kegrinde/STEAM documentation built on June 30, 2024, 11:27 p.m.