One step transitions (Chord diagram)

Source: R/otherplots.R

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

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)