[Taxacom] Bremer support values

[Evangelos Vlachos]

Dear John Grehan,

are you using the quickie.run script to run the analysis? Because in the
script it says:

"        Group supports are calculated by TBR-swapping the trees
        found, keeping note of the number of steps needed to
        loose each group.  The labels on branches show absolute
        and relative bremer supports (Goloboff & Farris 2001).
        *Groups indicated with a question mark (?) are those*
*        for which the absolute bremer supports appear to be*
*        10 or more...* "

This is the only reference I can find. If In understand correct this is how
that script calculates the Bremer support. Try to use the bremer.run script
instead (see attached), after you get all the most parsimonious trees.

You could also ask this question to the Google Group fot TNT at
https://groups.google.com/forum/#!forum/tnt-tree-analysis-using-new-technology

They usually reply very fast!

Hope it helps,

Evan

Evangelos Vlachos, Ph.D.
-
Assistant Researcher (pending),
CONICET and Museo Paleontológico Egidio Feruglio
Av. Fontana 140, 9100, Trelew, Chubut, Argentina; +54 0280 443 2100 int. 136
--
Research Associate, School of Geology, Aristotle University of
Thessaloniki, Greece
---
evlacho at gmail.com ; evlacho at mef.org.ar ; evlacho at geo.auth.gr

On 5 April 2018 at 14:18, John Grehan <calabar.john at gmail.com> wrote:

> Dear colleagues,
>
> I would be grateful to know what it means when there is a question mark
> after a Bremer support value. e.g. 1? This measure turned up in the results
> of a Bremer analysis in TNT. I have a very low level of knowledge about
> such techniques so please forgive my ignorance of the obvious. I have made
> some attempts to find out in the literature buyt so far not come across any
> direct reference to this.
>
> Thanks,
>
> John Grehan
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