Get the next rsID for the specified VariantKey in the VR file, or 0 if not found This function can be called in a loop to get all rsIDs that are associated with the same VariantKey (if any).

GetNextVrRsidByVariantKey(vk, pos, last = vk.env$vkrs_$NROWS,
  mc = vk.env$vkrs_$MC)

Arguments

vk

VariantKey to search.

pos

Current item.

last

Element (up to but not including) where to end the search (max value = nitems).

mc

Memory-mapped columns object as retured by MmapRSVKfile.