Convert trees produced by a BEAST2 FBD analysis with offset to trees with correct ages, accounting for possible metadata on the tips.Source:
This method adds a dummy tip at the present (t = 0) to fully extinct trees with offsets, in order to have correct ages (otherwise the most recent tip is assumed to be at 0). This is a workaround to get the proper ages of the trees into other tools such as TreeAnnotator.
path to BEAST2 output file containing posterior trees
path to BEAST2 trace log file containing offset values
path to file to write converted trees. If
NULL(default), trees are simply returned.
name of the added dummy tip, default
offset.to.dummy() (faster version discarding metadata)
# Convert trees with offset to trees with dummy tip trees_file <- system.file("extdata", "ex_offset.trees", package = "EvoPhylo") log_file <- system.file("extdata", "ex_offset.log", package = "EvoPhylo") converted_trees <- offset.to.dummy.metadata(trees_file, log_file) #>  364.0323 # Do something with the converted trees - for instance, calculate the MCC summary tree # Then remove the dummy tip from the MCC tree final_tree <- drop.dummy.beast(system.file("extdata", "ex_offset.MCC.tre", package = "EvoPhylo"))