Internal helper function for est_all_cond
est_cond(x, LD, YY, sigsnps, xtx = NULL)coloc dataset
named matrix of r
sum((Y-Ybar)^2)
names of snps to jointly condition on
optional, matrix X'X where X is the genotype matrix. If not available, will be estimated from LD, MAF, beta and sample size (the last three should be part of the coloc dataset)
data.table giving snp, beta and varbeta on remaining snps after conditioning