attributeTree: Attribute trees to subplots

In ArthurPERE/biomass: Estimating Aboveground Biomass and Its Uncertainty in Tropical Forests

Description

Fonction to attribute the trees on each subplot, the trees that are at the exterior of the subplot will be marked as NA

Usage

attributeTree(xy, plot, coordAbs)

Arguments

xy	The coordinates of the trees for each plot
plot	The label of the plot (same length as the number of rows of xy)
coordAbs	Output of the function cutPlot()

Value

A vector with the code of the subplot for each trees, the code will be plot_X_Y. X and Y are the coordinate where the tree is inside the plot in regards to the corresponding subplot.

Author(s)

Arthur PERE

Examples

# Trees relative coordinates
xy <- data.frame(x = runif(200, min = 0, max = 200), y = runif(200, min = 0, max = 200))


# cut the plot in multiple part
coord <- data.frame(X = rep(c(0, 200, 0, 200), 2), Y = rep(c(0, 0, 200, 200), 2))
coord[1:4, ] <- coord[1:4, ] + 5000
coord[5:8, ] <- coord[5:8, ] + 6000
corner <- rep(c(1, 2, 4, 3), 2)
plot <- rep(c("plot1", "plot2"), each = 4)

cut <- cutPlot(coord, plot, corner, gridsize = 100, dimX = 200, dimY = 200)


# Assign a plot to 200 trees
plot <- rep(c("plot1", "plot2"), 100)

# attribute trees to subplots
attributeTree(xy, plot, cut)

ArthurPERE/biomass documentation built on May 18, 2019, 2:33 a.m.