individualshrub2species: Transform shrub individual data to species data

In spif-ctfc/medfuels: Fuels of Mediterranean forests and shrublands

Description

Transforms shrub individual data (plant heights and diameters) into species level data (average height and cover).

Usage

individualshrub2species(x, sampledarea = 20, maxcover = 100,
  na.rm = TRUE, sd.H = FALSE)

individualshrub2stand(x, sampledarea = 20, maxcover = 100,
  na.rm = TRUE, sd.H = FALSE)

Arguments

x	data frame with columns 'plot', 'species', 'H' (height in cm), 'D1' and 'D2' (in cm)
sampledarea	sampled area in squared meters
maxcover	maximum allowed cover (set to NA to avoid truncation)
na.rm	whether to exclude missing values when averaging heights and adding areas
sd.H	whether to include the standard deviation of heights in the output

Value

data frame with columns 'plot', 'species', 'H' (mean height in cm), 'C' (cover in percent)

Examples

plot = c(1,1,1,1,1)
species = c("Erica arborea","Cistus albidus", "Erica arborea", "Cistus albidus", "Cistus albidus")
H = c(200,50,100,40,30)
D1 = c(140,40,100, 35,30)
D2 = D1
x = data.frame(plot, species, H, D1, D2)

individualshrub2species(x, sampledarea = 4)

spif-ctfc/medfuels documentation built on July 20, 2019, 5:57 a.m.