[Vegan-commits] r530 - pkg/man
noreply at r-forge.r-project.org
noreply at r-forge.r-project.org
Mon Oct 20 11:10:17 CEST 2008
Author: jarioksa
Date: 2008-10-20 11:10:16 +0200 (Mon, 20 Oct 2008)
New Revision: 530
Modified:
pkg/man/beals.Rd
Log:
beals.Rd: accents in names
Modified: pkg/man/beals.Rd
===================================================================
--- pkg/man/beals.Rd 2008-10-20 05:17:59 UTC (rev 529)
+++ pkg/man/beals.Rd 2008-10-20 09:10:16 UTC (rev 530)
@@ -28,8 +28,8 @@
\item{incSp}{ This flag indicates whether the target species has to be
included when computing the mean of the conditioned probabilities. The
original Beals (1984) definition is equivalent to \code{incSp=TRUE},
- while the formulation of Münzbergová and Herben is equal to
- \code{incSp=FALSE}. }
+ while the formulation of \enc{Münzbergová}{Munzbergova} and Herben is
+ equal to \code{incSp=FALSE}. }
\item{mode }{Specifies if and how abundance values have to be
used. \code{mode = 0} presence/absence mode. \code{mode = 1}
abundances in \code{refX} (or \code{x}) are used to compute
@@ -39,21 +39,22 @@
conditioned probabilities and the weighted average.}
}
\details{
- Beals smoothing is the estimated probability \eqn{p_{ij}}{p[ij]}
- that species \eqn{j} occurs in site \eqn{i}. It is defined as
- \eqn{p_{ij} = \frac{1}{S_i} \sum_k \frac{N_{jk} I_{ik}}{N_k}}{p[ij]
- = 1/S[i] Sum(k) N[jk] I[ik] / N[k]}, where \eqn{S_i}{S[i]} is the
- number of species on site \eqn{i}, \eqn{N_{jk}}{N[jk]} is the number of
- joint occurrences of species \eqn{j} and \eqn{k},
- \eqn{N_k}{N[k]} is the number of occurences of species \eqn{k}, and
- \eqn{I} is the incidence (0 or 1) of species (this last term is
- usually omitted from the equation, but it is necessary). As
- \eqn{N_{jk}}{N[jk]} can be interpreted as a mean of conditional
- probability, the \code{beals} fucntion can be interpred as a mean
- of conditioned probabilities (De Caceres & Legendre 2008). The
- currrent function is generalized to abundance values (De Caceres &
- Legendre 2008).
+ Beals smoothing is the estimated probability \eqn{p_{ij}}{p[ij]} that
+ species \eqn{j} occurs in site \eqn{i}. It is defined as \eqn{p_{ij}
+ = \frac{1}{S_i} \sum_k \frac{N_{jk} I_{ik}}{N_k}}{p[ij] = 1/S[i]
+ Sum(k) N[jk] I[ik] / N[k]}, where \eqn{S_i}{S[i]} is the number of
+ species on site \eqn{i}, \eqn{N_{jk}}{N[jk]} is the number of joint
+ occurrences of species \eqn{j} and \eqn{k}, \eqn{N_k}{N[k]} is the
+ number of occurences of species \eqn{k}, and \eqn{I} is the incidence
+ (0 or 1) of species (this last term is usually omitted from the
+ equation, but it is necessary). As \eqn{N_{jk}}{N[jk]} can be
+ interpreted as a mean of conditional probability, the \code{beals}
+ fucntion can be interpred as a mean of conditioned probabilities (De
+ \enc{Cáceres}{Caceres} & Legendre 2008). The currrent function is
+ generalized to abundance values (De \enc{Cáceres}{Caceres} & Legendre
+ 2008).
+
Beals smoothing was originally suggested as a method of data
transformation to remove excessive zeros (Beals 1984, McCune
1994). However, it is not a suitable method for this purpose since it
@@ -86,7 +87,7 @@
analysis of multivariate ecological data. \emph{Adv. Ecol. Res.} 14:
1--55.
-De Caceres, M. & Legendre, P. 2008. Beals smoothing
+De \enc{Cáceres}{Caceres}, M. & Legendre, P. 2008. Beals smoothing
revisited. \emph{Oecologia} 156: 657--669.
Ewald, J. 2002. A probabilistic approach to estimating species pools
@@ -104,7 +105,7 @@
simulated vegetational data. \emph{Ecology} 51, 89--102.
}
-\author{Miquel De Caceres and Jari Oksanen}
+\author{Miquel De \enc{Cáceres}{Caceres} and Jari Oksanen}
\seealso{\code{\link{decostand}} for proper standardization methods,
\code{\link{specpool}} for an attempt to assess the size of species
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