For a classified set of vegetation samples, a importance table lists for each species the average or typical abundance of each species in each class.
importance(comm,clustering,minval=0,digits=2,show=minval,
sort=FALSE,typical=TRUE,spcord,dots=TRUE)a data.frame with species as rows, classes as columns, with average abundance of species in classes.
a data.frame of species abundances with samples as rows and species as columns
a vector of (integer) class memberships, or an object of
class ‘clustering’, class ‘partana’,
of class partition
the minimum importance a species must have in at least one class to be included in the output
the number of digits to report in the table
the minimum value a species must have to print a value
a switch to control interactive re-ordering
a switch to control how mean abundance is calculated. Typical=TRUE divides the sum of species abundance by the number of plots in which it occurs; typical=FALSE divides by the number of plots in the type
a vector of integers to specify the order in which species should be listed in the table
a switch to control substituting dots for small values
David W. Roberts droberts@montana.edu http://ecology.msu.montana.edu/droberts/droberts.html
const, vegtab,
concov
data(bryceveg) # returns a data.frame called bryceveg
data(brycesite)
class <- cut(brycesite$elev,10,labels=FALSE)
importance(bryceveg,class,minval=0.25)
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