add_growth_zone: add_growth_zone

In paul-carteron/SimCop: SimCop

Description

add_growth_zone

Usage

add_growth_zone(
  stand_data,
  variable = "Vha",
  growth_type = "annual",
  reduction_rate = 0.1,
  zone_color = "purple",
  grab_force = 2,
  coeff_traj = c(a = 13.532, b = -1.461, a0 = 14.21, b0 = -1.79),
  show_point = FALSE
)

Arguments

stand_data	data.frame from the use of "import_stand_data" function
variable	variable on which the growth will be calculated
growth_type	should be "annual" or "average", which mean from the start of the stand
reduction_rate	numerical value between 0 and 1 to characterize the width of the zone in relation to the maximum. For example, 0.05 corresponds to a zone of 5% around the maximum.
zone_color	color of the zone
grab_force	force apply to connect point together. Defaults to 2
coeff_traj	Coefficient a, b, a0, and b0 of the mortality trajectory (cf : Ningre et al "Trajectoires d auto-eclaircie du Douglas en France)
show_point	if TRUE point used to find isolines are shown

Value

a ggplot object corresponding to target zone

paul-carteron/SimCop documentation built on Dec. 22, 2021, 6:42 a.m.