inst/doc/dendrometry.R

In dendrometry: Forest Estimations and Dendrometric Computations

## ----setup, include = FALSE---------------------------------------------------
knitr::opts_chunk$set(
  collapse = FALSE,
  comment = "#>"
)

## ----Citation-----------------------------------------------------------------
citation("dendrometry")

## ----package------------------------------------------------------------------
library(dendrometry)

## ----data, collapse=TRUE------------------------------------------------------
data("Tree")
head(Tree)

## ----data description, eval=FALSE---------------------------------------------
# help("Tree")

## ----dbh----------------------------------------------------------------------
Tree$DBH <- dbh(Tree$circum)
head(Tree)

## ----Height estimation--------------------------------------------------------
Tree$upHeight <- height(
  distance = Tree$dist, top = Tree$up, bottom = Tree$down,
  type = "angle", angleUnit = "deg"
)
Tree$futHeight <- height(
  distance = Tree$dist, top = Tree$fut, bottom = Tree$down,
  type = "angle", angleUnit = "deg"
)
head(Tree)

## ----round, eval=TRUE---------------------------------------------------------
Tree$DBH <- round(Tree$DBH, 2)
Tree$upHeight <- round(Tree$upHeight, 2)
Tree$futHeight <- round(Tree$futHeight, 2)
Tree

## ----slope--------------------------------------------------------------------
Tree$up.slope <- angle2slope(Tree$up)
Tree$up.slope <- round(Tree$up.slope)
Tree

## ----ind basal----------------------------------------------------------------
Tree$basal <- basal_i(dbh = Tree$DBH / 100)
Tree$basal <- round(Tree$basal, 4)
Tree

## ----Lorey--------------------------------------------------------------------
Lorey <- loreyHeight(basal = Tree$basal, height = Tree$upHeight)
Lorey

## ----Lorey \' s and simple mean diffrence, echo=FALSE-------------------------
Height.Mean <- mean(Tree$upHeight)
Height <- c(Height.Mean, Lorey)
names(Height) <- c("Mean of Height(m)", "Lorey height(m)")
Height

## ----Mean diameter------------------------------------------------------------
Dm <- diameterMean(Tree$DBH)
Dm

## ----Mean diameter vs simple mean of dbh, echo=FALSE--------------------------
Diam <- mean(Tree$DBH)
Diameter <- c(Diam, Dm)
names(Diameter) <- c("Simple mean of Diameter(cm)", "Mean diameter(cm)")
Diameter

## ----Logging dataset----------------------------------------------------------
data("Logging")
summary(Logging)

## ----factorize----------------------------------------------------------------
class(Logging$tree)
Logging <- factorize(data = Logging)
class(Logging$tree)
summary(Logging)
head(Logging, 4)
attach(Logging)

## ----decrease-----------------------------------------------------------------
Decrease <- decrease(middle = diametreMedian, breast = diametreBase)
Decrease

## ----reducecoef---------------------------------------------------------------
Reduce <- reducecoef(middle = diametreMedian, breast = diametreBase)
Reduce

## ----decreaseMetric-----------------------------------------------------------
DecMetric <- decreaseMetric(
  dmh = diametreMedian, dbh = diametreBase,
  mh = hauteur / 2
)
DecMetric

## ----decreaseMetric 1.5-------------------------------------------------------
DecMetric1.5 <- decreaseMetric(
  dmh = diametreMedian, dbh = diametreBase,
  mh = hauteur / 2, bh = 1.5
)
DecMetric1.5

## ----volume-------------------------------------------------------------------
# HUBER
VolHub <- volume(height = hauteur, dm = diametreMedian, method = "huber")
# SMALIAN
VolSmal <- volume(
  height = hauteur, do = diametreBase, ds = diametreSection,
  method = "smalian"
)
# CONE
VolCone <- volume(
  height = hauteur, do = diametreBase, ds = diametreSection,
  method = "cone"
)
# NEWTON
VolNew <- volume(
  height = hauteur, do = diametreBase, dm = diametreMedian,
  ds = diametreSection, method = "newton"
)

## ----Trees volume-------------------------------------------------------------
TreeVol <- data.frame(tree, VolHub, VolSmal, VolCone, VolNew)
head(TreeVol)

## ----volume successive--------------------------------------------------------
# HUBER
VolHubSuc <- volume(
  height = hauteur, dm = diametreMedian, method = "huber",
  successive = TRUE, log = tree
)
# SMALIAN
VolSmalSuc <- volume(
  height = hauteur, do = diametreBase, ds = diametreSection,
  method = "smalian", successive = TRUE, log = tree
)
# CONE
VolConSuc <- volume(
  height = hauteur, do = diametreBase, ds = diametreSection,
  method = "cone", successive = TRUE, log = tree
)
# NEWTON
VolNewSuc <- volume(
  height = hauteur, do = diametreBase, dm = diametreMedian,
  ds = diametreSection, method = "newton", successive = TRUE,
  log = tree
)
VolNewSuc
volume(
  height = hauteur, do = diametreBase, dm = diametreMedian,
  ds = diametreSection, method = "newton", successive = TRUE, log = tree
)

## ----Tree volume successive---------------------------------------------------
TreeVolSuc <- data.frame(tree = unique(tree), VolHubSuc, VolSmalSuc, VolConSuc, VolNewSuc)
TreeVolSuc

## ----shape coefficient--------------------------------------------------------
Shape <- shape(volume = VolNewSuc, height = hauteur, dbh = perimetreMedian)
Shape