Create an ipm_stand object representing a forest plot

Create an ipm_stand object representing a forest plot

Usage

stand(data)

Arguments

data

A data.frame or tibble with individual-level tree records. Required columns: a size column (named size or dbh, in mm,= 127 mm), a species column (named sp, species, orspecies_id), and a plot_size column (plot area in m2,same value for all rows).

Value

An object of S3 class "ipm_stand" with fields $trees (data.frame with standardized columns size_mm and species_id), $species (character vector of unique species IDs), and $plot_size (numeric scalar).

Examples

df <- data.frame(size_mm = c(150, 200, 350),
                 species_id = "ABIBAL",
                 plot_size  = 1000)
s <- stand(df)
print(s)
#> <ipm_stand>  3 trees | 1 species | 1000 m2 plot