Re: [R] Vegan fisher.alpha error

From: Ben Bolker <bolker_at_ufl.edu>
Date: Mon, 31 May 2010 23:47:22 +0000 (UTC)

Kang Min <ngokangmin <at> gmail.com> writes:

> I have an error with fisher.alpha from the vegan package.
>
> > fisher.alpha(data[[1]])
> Error in nlm(Dev.logseries, n.r = n.r, p = p, N = N, hessian =
> TRUE, ...) :
> missing value in parameter
>
> I am trying to find fisher alpha for a list of 100 data frames, and I
> tried it on individual data frames in the list, which gave me the
> error above.
> I have every data frame in the same format as the example data BCI,
> species as column names and quadrats as row names.

  It's almost impossible to answer this question without a reproducible example. Does the same thing happen with

fisher.alpha(head(data[[1]]))

?

If so, can you post the results of dput(head(data[[1]]))

?

If not, please spend some time cutting the problem down to something that can be posted. If that's really hard, post your data on the web somewhere and post a link to it. (Sending attachments to the mailing list is a bit dicey.)

  Ben Bolker



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