vpc or npc. The function then parses the file and passes
the result to plotting functions.read.npc.vpc.results(vpc.results = NULL, npc.results = NULL,
verbose = FALSE, ...)vcp. Often this is named npc. Often this is named vpc.results.npc
or vpc withNULL if npc.results is used.vpc.results is used.vpc.results or npc.results are necessary. If both
or none are defined then the function does nothing and a NULL is
returned from the function.xpose.VPC
npc.coverage