Create a Sankey Diagram — create

This function takes a frequency table (crosstab) as input and creates a Sankey diagram. If a column named "Ha" exists in the frequency table, it will be used for filtering and sorting, otherwise it will fall back to using the "Freq" column.

Usage

create_sankey(freq_table, area_cutoff = 10000, change_only = FALSE)

Arguments

freq_table: A frequency table containing land cover T1, T2, T3, etc.. and a Frequency column (numeric). If a column named "Ha" exists, it will be used instead of "Freq".
area_cutoff: Minimum number of pixels of land use land cover frequency to include.
change_only: Logical flag, if TRUE exclude persistent land cover.

Value

A Sankey plot.

Author

Dony Indiarto

Examples

if (FALSE) {
  synthetic_data <- data.frame(
    "1990" = rep(c("Forest", "Urban", "Agriculture", "Water"), each = 4),
    "2020" = rep(c("Forest", "Urban", "Agriculture", "Water"), 4),
    Freq = sample(1:100, 16)
  ) %>%
    dplyr::arrange("1990")

  create_sankey(freq_table = synthetic_data, area_cutoff = 0, change_only = FALSE)
}