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Last update on 05. Apr 2017 .
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    Bootstrap display settings

    OCCURRENCE

    ARB_NT/Properties/Tree options/Bootstrap settings

     

    DESCRIPTION

    The following boostrap related display settings are available:

    • 'Show bootstrap circles' toggles the display of bootstrap circles (only available if the tree contains bootstrap values).
    • Hide bootstrap values below Configure above which threshold bootstrap values are shown in the tree. Generally, branches with less than 50% cannot be regarded as supported.
    • If 'Use ellipse' is active, ellipses instead of circles are drawn in dendrogram tree.
    • 'Bootstrap circle zoom factor' allows to increase/reduce the size of the boostrap circles/ellipse
    • 'Bootstrap radius limit' allows to limit the max. bootstrap circle/ellipse size. If a bootstrap exceeds this limit its circle/ellipse will be drawn in a different color.

     

    NOTES

    These settings will be managed together with other tree settings (use config icon in 'Tree settings' window)

     

    Bootstrap circle size

    The radius of the bootstrap circle depends on the bootstrap value itself, on the length of the branch from the node towards the tree root and on the configured zoom factor/limit.

    For a zoom factor of 1, a bootstrap value of ~44% will show a circle/ellipse which completely contains the whole branch.

    For increasing bootstrap values the radius goes towards zero; for smaller bootstrap values the radius will get infinite - that is why ARB uses a 'Bootstrap radius limit'.

    The formula used to calculate the (unlimited) bootstrap circle radius is

    (1/sqrt(bootstrap/100) - 1) * 2*branchlength
     

    EXAMPLES

    None

     

    WARNINGS

    None

     

    BUGS

    No bugs known