accumulate {mefa} | R Documentation |
This function can be used to summarise accumulation trends on object class "scount", if segment
column
of of the 'sscount' object can be ordered (e.g. time).
accumulate(x)
x |
an object of class 'scount'. |
A data frame with nlevels(x$data$segment)
number of rows and 5 columns.
segment
contains ordered levels of x$data$segment
, newrecord
is the number of new records (or number of individuals, based on x$data$count
), newspec
is the number of new species in subsequent segment levels, cumrecord
is the cumulative number of new records, cumspec
is the cumulative number of new species in subsequent segment levels.
Peter Solymos, Solymos.Peter@aotk.szie.hu, http://www.univet.hu/users/psolymos/personal/
ssc <- sscount(data.frame( LETTERS[rpois(20,1)+1], # samples letters[rpois(20,2)+1], # species rpois(20,10)+2000, # years of observetion rep(1,20))) # 1s for single counts ssc$data accumulate(ssc)