sscount {mefa}R Documentation

Makes Object of Class 'sscount'

Description

The function makes an object of class 'sscount' from a data frame with columns for samples, species, count and optionally segment.

Usage

sscount(sstable, zc = "NULL")

Arguments

sstable dataframe with three or four columns. Columns must be in the order of sample, species, segment (optional) and count.
zc identifier for samples with zero count, by default it is "NULL". When non existing identifier is given, the value is set to default with warning.

Value

A result is an object of class 'sscount'.

data data frame with columns sample, species, segment, count. First three columns are factors, count is numeric.
zc flag for rows with 0 total count, zc="zero.count".
nsamples number of samples (levels) in data column sample.
nspecies number of species (levels) in data column species, "pseudo-species" created by zc is excluded.
segment.levels list of levels in data column segment.

Author(s)

Peter Solymos, Solymos.Peter@aotk.szie.hu, http://www.univet.hu/users/psolymos/personal/

See Also

drtsscount, fill.count, inflate, sscount, ttsscount

Examples

### Example 1: simple atrificial data

ss <- data.frame(
cbind(
c("sample1","sample1","sample2","sample2","sample3","sample4"),
c("species1","species1","species1","species2","species3","zero.count"),
c("male","female","male","female","male","male")
),
c(1, 2, 10, 3, 4, 1)
)
colnames(ss) <- c("sample.id", "species.id", "gender", "catch")

sscount(ss)
sscount(ss, zc="zero.count")
sscount(ss[,c(1,2,4)], zc="zero.count")

### Example 2: field data of the dolina

## Not run: 
data(dol.count, dol.sample, landsnail)

sscount(fill.count(dol.count), zc="zero.count")
## End(Not run)

[Package mefa version 1.0 Index]