[R] package FD

Jim Lemon drjimlemon at gmail.com
Fri Mar 4 00:42:20 CET 2016

Hi Fabio,
It is possible that your remaining "numeric" variable is a factor. What does:


say? (where you substitute the name of your "numeric" variable)


On Fri, Mar 4, 2016 at 2:25 AM, Fabio Monteiro
<fabio.monteiro1992 at gmail.com> wrote:
> Hello, my name is Fábio and I'm a Marine Ecology student in Portugal.
> I'm currently using the FD package for my work and yesterday one message
> appeared that I wasn't expecting and I really need your help to try to
> figure out what's happening.
> I'm using the dbFD function and the following message appeared:
> FRic: Only categorical and/or ordinal trait(s) present in 'x'. FRic was
>  measured as the number of unique trait combinations, NOT as the convex
> hull volume.
> FDiv: Cannot be computed when only categorical and/or ordinal trait(s)
> present in 'x'.
> My data:
> x is a matrix with species vs functional traits
> a is a matrix with species vs sampling (in abundances)
> Previously I used the dbFD function and was working just fine. Yesterday I
> removed 2 traits and this message appeared.
> My traits now are 3 categorical traits and 1 numeric. The 2 trais that I
> removed were numeric traits as well. I really need to remove those trait,
> but I still need the FDiv to be calculated. Can you explain to me why is
> this error occurring? I need to know how the dbFD is measuring the indexes
> so I can understanding the error and if I can or can't continue to use this
> package (if it applies or not to my goals)
> Kind regards
> Fábio Monteiro
>         [[alternative HTML version deleted]]
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