Remove variants with low median depth and depth-corrected homoplasmy
Source:R/filter2.R
clean_redeem_remove_low_median_depth.RdRemoves variants whose per‑variant median depth (from @V.fitered$median_depth)
is below a threshold, and also removes depth‑corrected possible homoplasmy
(CellNPCT > 0.75). After filtering, rebuilds matrices and the depth matrix.