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Frequency of species combinations

Source: R/freq_comb.R
freq_comb.Rd

The `freq_comb()` function extracts the combinational frequency of species. `freq_comb()` is minor and features in the vignette to assist users visualize their data.

Usage

freq_comb(data, type, dim_max)

Arguments

data

data.frame with the frequency of species combinations.

type

Character. Supply either `"Grid"` or `"Transect"`.

dim_max

Numeric. Number of sampling units in one row of a `"Grid"` or `"Transect"`.

Value

The function returns an object of class data.frame.

See also

[`comspat()`]

Author

James L. Tsakalos

Examples


# Training data (see package vignette S.9)
s9 <- data.frame(
  Species = c("A", "D", "B", "B", "E", "C", "B", "A"),
  Y = c(1, 1, 2, 2, 2, 3, 3, 3),
  X = c(2, 3, 1, 2, 2, 1, 1, 3)
)

# create data.frame counting the species combinations
freq_comb(
  data = s9,
  type = "Grid",
  dim_max = 3
)
#>   combinations     Freq
#> 1            A 22.22222
#> 2            B 11.11111
#> 3         B, C 11.11111
#> 4         B, E 11.11111
#> 5            D 11.11111
#> 6        Empty 33.33333