[Taxacom] Bremer support values

[John Grehan]

Thanks Evan,

At least that gives me some clue. I have no idea of what I am using to run
the analysis - I just go to trees, then bremer supports, then calculate
supports. Don't know anything about running scripts and could not run the
attachment. As I said, very ignorant and have not got very far with various
resources so won't trouble you or anyone further.

John

On Thu, Apr 5, 2018 at 1:34 PM, Evangelos Vlachos <evlacho at gmail.com> wrote:

> 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
> <https://maps.google.com/?q=Av.+Fontana+140&entry=gmail&source=g>, 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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