Hi everyone
I am currently trying to calculate bremer supports for a tree using a matrix of 102 taxa and 37 morphological characters in TnT. I am using implied weighting.
I have tried several different functions but nothing seems to produce the desired output.
When i run the Bremer.run script on my consensus tree i get support values but all of them are below 1 (0.63, 0.30 etc.). How to interpret these values?
If i am to use the built in bremer support function (BSUPPORT) i am unsure about exactly what my workflow should be.
Maybe some of you have a good protocol for running this function?
Thanks in advance!
Nicklas
Hi Nicklas,
I am trying to implement calculation of Bremer supports in my TNT scripts too. My current approach looks like this:
search for fundamental trees
calculate strict consensus tree
generate suboptimal trees with branch swapping
apply bsupport command
That appears to be working but I am observing that sometimes the bremer support tree is slightly better resolved than the strict consensus.
Maybe phylogenetics buffs have a more specific answer?
Lars
Hi Nicklas
So, when you are using Implied weightihing, you do not have "steps" as your optimality criteria, but another measure called fit. When using "bsupport" command in an IW analysis you are calculating the absolute support (hence the weird numbers)
Try using "bsupport[" (with the [ in the end) this will give the relative support.
Hope it helps
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