chordDiagramLand: One step transitions (Chord diagram)

In OpenLand: Quantitative Analysis and Visualization of LUCC

Description

A circlize plot representing the one step transitions between two times point of interest.

Usage

chordDiagramLand(
  dataset,
  legendtable,
  legposition = c(x = -1.3, y = 0),
  legtitle = "Categories",
  sectorcol = "gray80",
  area_km2 = TRUE,
  legendsize = 1,
  y.intersp = 1,
  x.margin = c(-1, 1)
)

Arguments

dataset	A table of the one step transition (lulc_OneStep) generated by contingencyTable.
legendtable	A table containing the LUC legend items and their respective color (tb_legend).
legposition	numeric. A vector containing the 'x' and 'y' values for the position of the legend. (see legend).
legtitle	character. The title of the legend.
sectorcol	character. The color of the external sector containing the years of compared time points.
area_km2	logical. If TRUE the change is computed in km2, if FALSE in pixel counts.
legendsize	numeric. Font size of the legend. (see "cex" in legend).
y.intersp	numeric. character interspacing factor for vertical (y) spacing in the legend.
x.margin	numeric vector ensuring additional space (blank area) on the left or right of the circle for the legend, by default it is c(-1, 1). (see "canvas.xlim" in circos.par)

Value

A Chord Diagram

Examples

# editing the category names

SL_2002_2014$tb_legend$categoryName <- factor(c("Ap", "FF", "SA", "SG", "aa", "SF",
                                               "Agua", "Iu", "Ac", "R", "Im"),
                                     levels = c("FF", "SF", "SA", "SG", "aa", "Ap",
                                              "Ac", "Im", "Iu", "Agua", "R"))

SL_2002_2014$tb_legend$color <- c("#FFE4B5", "#228B22", "#00FF00", "#CAFF70",
                                  "#EE6363", "#00CD00", "#436EEE", "#FFAEB9",
                                  "#FFA54F", "#68228B", "#636363")

# the plot
chordDiagramLand(dataset = SL_2002_2014$lulc_Onestep,
                 legendtable = SL_2002_2014$tb_legend)

OpenLand documentation built on Nov. 2, 2021, 9:13 a.m.