as.xcount {mefa}R Documentation

Makes an Object of Class 'xcount' from a Table

Description

The function converts a sample/species crosstable into an 'xcount' object.

Usage

as.xcount(table, species.columns = TRUE, segment = "unspecified")

Arguments

table a data frame with sample/species count data.
species.columns if FALSE, species are rows and samples are columns. By default it is TRUE.
segment arbitrary name of the segment (eg. adult, juvenile, male, female) whose data are included in the table, by default it is "unspecified".

Value

A result is an 'xcount' object.

segment value of the segment argument.
data matrix containing count data of sample/species crosstabulation.
nsamples number of rows (samples) in data.
nspecies number of columns (species) in data.

Author(s)

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

See Also

sscount, xcount, mefa, xorder, check.attrib

Examples

### Example 1: simple atrificial data

xc <- as.data.frame(rbind(
c(4, 0, 0),
c(2, 4, 0),
c(0, 0, 5),
c(0, 0, 0)
))
rownames(xc) <- c("sample1", "sample2", "sample3", "sample4")
colnames(xc) <- c("species1", "species2", "species3")

xc1 <- as.xcount(xc)
xc1

xc2 <- as.xcount(xc, segment = "female")
xc2

### Example 2: field data of Villany Hills

## Not run: 
data(vtable)

v1 <- as.xcount(vtable, species.columns = FALSE)
v1

v2 <- as.xcount(vtable, species.columns = FALSE, segment = "adult")
v2
## End(Not run)
[Package mefa version 1.0 Index]