Creates presence-absence matrix from a data.frame

Creates a presence-absence matrix (PAM) from a data.frame that contains species names and identifiers of positions where species are found.

Usage

PAM_from_table(data, ID_column, species_column)

Arguments

data

data.frame of species found in distinct positions (defined by identifiers). Must include at least two columns: "ID" and "Species".

ID_column

(character) name of the column containing identifiers.

species_column

(character) name of the column containing species names.

Value

Species' presence (1) and absence (0) matrix for a set of positions defined by identifiers.

Examples

# Data
data("sp_data", package = "biosurvey")

# PAM
pam <- PAM_from_table(data = sp_data, ID_column = "ID",
                      species_column = "Species")
pam[1:10, c(1, 21:25)]
#>    ID Species_20 Species_21 Species_22 Species_23 Species_24
#> 5   5          0          0          1          0          0
#> 35 35          0          1          0          0          0
#> 36 36          0          1          0          0          0
#> 38 38          0          0          1          0          0
#> 39 39          0          0          1          0          0
#> 40 40          0          0          1          0          0
#> 41 41          0          0          1          0          0
#> 42 42          0          0          1          0          0
#> 43 43          0          0          1          0          0
#> 44 44          0          0          1          0          0